The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

This Advertisement is a reprint from 1990. It is on glossy photo paper and is in Excellent condition! The Picture is the picture of the actual item. It is a beautiful piece of Audio History. I have THOUSANDS more from every major brand of Audio from 1950 up to now. ---Satisfaction is GUARANTEED at AV Archives! Take a look at my feedback for satisfied customers! I have been open since 2007 and have sold THOUSANDS of Ads, Reviews, and Brochures to satisfied customers. ---I Ship Worldwide and combine shipping, each additional item is just $1 after the first is paid. ---Each Page is 8.5 by 11 unless otherwise noted in title. ---Single Page, Single Sided Ads, unless otherwise noted in the title. ---These Ads are perfect for framing and placed in your Audio Room. ---I have a HUGE Vinyl Record Store with Thousands of Collectable records, and MANY First Pressings/Audiophile LPs. Just click on my Vinyl Record Store link on the left under categories. Email me for any specific questions, You will hear back from me usually within 4 hours, THANK YOU! Greg

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Overture Ultimate Home Electronics, located in Wilmington, Delaware, is America’s premier high-end audio, home theater, and home electronics store. The equipment we are offering on Ebay is either equipment we have had on demo at Overture, or equipment that has been taken in by Overture as a trade-in from our customers. All of the equipment has been thoroughly checked by our technicians to make sure it works properly. BEFORE YOU BID SEE IF YOUR STATE IS ON THE TAX LIST. EBAY IS NOW CHARGING TAX.Up for auction is a pair of Audio Research Classic 150 Mono Amplifiers, used. Heavy Damage. For parts or repair.

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping