Melos SHA-1 Stereo Tube Preamplifier / Headphone Amplifier. Excellent Condition.WORKING , GREAT SOUND.The Melos SHA-1 is a musical tube headphone amplifier and recognized Stereophile product of the year recipient that makes your audio source a joy to listen to.The SHA-1 is a dual triode balanced input - line amplifier coupled to a source follower driver that provides ample drive and a low output impedance. This arrangement offers exceptional phase linearity and very low output impedance .5ohm. The SHA-1 uses separate voltage regulators for voltage and power amplifier and has 3 line inputs /one output. Two toggle switch and one volume control.The SHA-1 can be used as a line stage only preamp too which is a real added bonus. For those can guys who have been looking for headphone amp nirvana, this will take you there. Was originally developed in a collaboration with Grado and at the time it was brought to market in 1995, it was the best of the best products available. Fast forward almost 30yrs and it STILL remains a reference piece. Description: class-A hybrid tube/FET headphone amplifier/line stage.Line gain: 19dB.THD: <0.07% at 1kHz, 1V output.Phase: non-inverting.Frequency response: 15Hz-200kHz, +0, -1dB.S/N ratio: -85dB below. full output.Input impedance: 100k ohms.Output impedance (line): 0.5 ohms.Maximum output (headphones): 3.5V.Dimensions: 19 W by 17 D by 3.5 H.Weight: 12 lbs.

We service and test what we sell. This one has very low distortion and flat frequency response. Sonically fantastic. Rare and Classic Melos SHA-1 Stereo Tube Preamplifier / Headphone Amplifier Serviced (we have the schematic) New Tubes. 2 line level inputs. 2 headphone jacks. Probably one of the best headphone amplifiers ever made. Excellent as a preamplifier. Simple circuit uses one 6DJ8 per channel in a long tailed pair. High quality ALPs volume control. Very high quality parts including gold plated RCA jacks. Servo control for dc offset. Highly Regulated power supplies using three terminal regulators, both filament and high voltage. Toroidal power transformer. Headphone output can drive low impedance dynamic headphones to loud clear levels. See Stereophile review from early 90s. This is the only one to buy. The other models are problematic.

In perfect working condition. Received from my uncle who passed away who was an audiophile. Tested and works perfectly. I do not know if the tubes have been replaced or if it has been refurbished. But he took extremely good care of all his high-end audio. Please request for more photos and Ill take the cover off. Please ask if you have any questions. I have several more amps and misc gear that will be posted soon. Accepting offers. Will pack professionally and work great care. This Melos SHA-1 Stereo Tube Preamplifier / Headphone Amplifier is a high-quality vintage piece that will enhance your listening experience. With two channels, analog technology, and a sleek silver design, this amplifier is a great addition to any home audio system. The unit was manufactured in the United States in the 1990-1999 period, and has been well-taken care of. Its features include a tube amplifier, and it comes with the original model number. The brand is Melos, a well-known name in the audio industry. If youre looking for a preamp that will take your audio to the next level, this is the perfect choice for you.