Enhance the sound quality of your audio system with this Bose 901 Series III Active Equalizer. This equalizer is compatible with your Bose speakers and amplifiers, featuring two inputs and two outputs. Its brown color and sleek design will blend seamlessly with your home audio system. The equalizer has been tested to ensure that it is in perfect working condition. It is a great addition to your sound system, creating a balanced and powerful audio experience. Don't miss out on this opportunity to upgrade your audio setup.

Up for sale, a MINT condition Bose 901 vi equalizer. This unit looks and sounds like new! One owner and well taken care of. I am also including the pictured 901 vi broschure that came with the speakers. Please see the attached pictures and video for condition and demonstration. View my other auctions for an array of interesting items at great prices. Please ask for additional pictures or videos if needed. I do NOT accept returns on any items. The vintage stereo gear that I sell IS vintage, meaning that it is 30, 40, or even 50+ years old. With that being said, I can not offer any warranties on it. Although I have never had any issues with anything I’ve sold, I want to note that. If I have a piece of gear that is questionable in any way, i will either list it as “Parts or Repair” or I will note the issues that I have found. Thank you very much for your business. I am happy to serve you. 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Do not message me and ask that I ship your item to a different address. This is a violation of eBay policy and we will not comply with that request. I use a variety of boxes, including those branded by the shipping carrier. I often use recycled or repurposed boxes and packing material. While I’m not quite sure why it matters and I never thought I would have to mention this, but if you have an issue with receiving your item in a shipping box that once housed another item, please find someone else to buy from. For international orders, when applicable, buyer is responsible for paying any and all additional fees, duties, and costs associated with the shipping, handling, and/or import/export of goods. Most items are available for local pickup in or around the 15642 zip code. Please contact us if you are interested in local pickup. Item Condition: Many of the items we sell are used. It should be assumed that all items are sold AS-IS. While we make every effort to accurately describe items, sometimes it is not possible for us to test every function of a particular item. Please refer to photos and ask any questions prior to bidding. When stock photos are used, item packaging may differ from what is shown. We make no claim as to functionality or provide any type of warranty on any item. As with all used items, you should expect your item to have signs of wear (i.e. scratches, dents, scrapes, wrinkles, stains, etc.) Again, we make every effort to document any issues as best as possible. What you see is what you get; nothing more, nothing less. Returns: When indicated on the item’s listing, returns are accepted within the specified time period for a refund (or exchange, If applicable) minus any shipping and handling costs and a 20% restocking fee. Otherwise, no refunds or exchanges will be given. When an item included “free shipping,” actual shipping and handling costs will be deducted from any refunds. Under no circumstances are any shipping and handling fees refundable; this includes return shipping costs. To claim a refund, process the return through eBay. Tracking and insurance must be provided for return shipments. Upon receipt of the item in the original packaging and in the exact same condition it was sold in (i.e. unopened, new, sealed, with tags, undamaged, etc.), I will quickly process your refund. No refunds will be given for items that are not in the original packaging or not in the same exact condition as when I sold them. For items listed as “no returns” or “no refunds,” no refunds will be given under any circumstances. No warranties, express or implied, are offered with your item unless otherwise specified. Seller makes no guarantee as to the applicability of any factory warranties that may be included with a particular item. Feedback: We take our 100% positive feedback rating very seriously. Customer satisfaction is our top priority. Please leave positive feedback once your item arrives and you are satisfied. If, for any reason, you do not feel that we have provided you with a positive experience, please contact us prior to leaving feedback so we have the ability to correct the problem. Please do not leave neutral or negative feedback due to an issue with the shipping carrier. Tracking info is uploaded when available. We cannot and should not be held responsible for your item arriving later than expected when the delay is out of our control, nor can we be held responsible for items lost or damaged by the shipping carrier. We also cannot be held responsible for you not reading the item’s description. Please contact us prior to leaving negative or neutral feedback. ow extended shipping times for freight items. All freight shipments should be arranged prior to the completion of the transaction by contacting us directly. For shipments where tracking information is available, tracking information will be uploaded promptly. I make every effort to package your items securely, so they arrive safely and undamaged. In the event that your item is damaged during shipping, please contact me immediately, along with following the damaged shipment claim process for the respective carrier. We are not responsible for any damage done in transit. While a particular shipping carrier may be listed, this is for price calculations only. I reserve the right to ship your item with either USPS, UPS, FedEx, or another major carrier at no additional cost to you. Freight carriers will be chosen based on a number of factors pertaining to the particular transaction. Digital items may be transferred electronically, where permitted by eBay regulations. With the exception of freight shipments, all items will be shipped to the confirmed address associated with your account. Do not message me and ask that I ship your item to a different address. This is a violation of eBay policy and we will not comply with that request. I use a variety of boxes, including those branded by the shipping carrier. I often use recycled or repurposed boxes and packing material. While I’m not quite sure why it matters and I never thought I would have to mention this, but if you have an issue with receiving your item in a shipping box that once housed another item, please find someone else to buy from. For international orders, when applicable, buyer is responsible for paying any and all additional fees, duties, and costs associated with the shipping, handling, and/or import/export of goods. Most items are available for local pickup in or around the 15642 zip code. Please contact us if you are interested in local pickup. Item Condition: Many of the items we sell are used. It should be assumed that all items are sold AS-IS. While we make every effort to accurately describe items, sometimes it is not possible for us to test every function of a particular item. Please refer to photos and ask any questions prior to bidding. When stock photos are used, item packaging may differ from what is shown. We make no claim as to functionality or provide any type of warranty on any item. As with all used items, you should expect your item to have signs of wear (i.e. scratches, dents, scrapes, wrinkles, stains, etc.) Again, we make every effort to document any issues as best as possible. What you see is what you get; nothing more, nothing less. Returns: When indicated on the item’s listing, returns are accepted within the specified time period for a refund (or exchange, If applicable) minus any shipping and handling costs and a 20% restocking fee. Otherwise, no refunds or exchanges will be given. When an item included “free shipping,” actual shipping and handling costs will be deducted from any refunds. Under no circumstances are any shipping and handling fees refundable; this includes return shipping costs. To claim a refund, process the return through eBay. Tracking and insurance must be provided for return shipments. Upon receipt of the item in the original packaging and in the exact same condition it was sold in (i.e. unopened, new, sealed, with tags, undamaged, etc.), I will quickly process your refund. No refunds will be given for items that are not in the original packaging or not in the same exact condition as when I sold them. For items listed as “no returns” or “no refunds,” no refunds will be given under any circumstances. No warranties, express or implied, are offered with your item unless otherwise specified. Seller makes no guarantee as to the applicability of any factory warranties that may be included with a particular item. Feedback: We take our 100% positive feedback rating very seriously. Customer satisfaction is our top priority. Please leave positive feedback once your item arrives and you are satisfied. If, for any reason, you do not feel that we have provided you with a positive experience, please contact us prior to leaving feedback so we have the ability to correct the problem. Please do not leave neutral or negative feedback due to an issue with the shipping carrier. Tracking info is uploaded when available. We cannot and should not be held responsible for your item arriving later than expected when the delay is out of our control, nor can we be held responsible for items lost or damaged by the shipping carrier. We also cannot be held responsible for you not reading the item’s description. Please contact us prior to leaving negative or neutral feedback.

This auction is for Bose 901 Series III Active Equalizer. It was recently professionally serviced. The copy of the receipt will be included with the purchase.Also, Its fully tested and demo included. Full demo is included here: DEMO: Full Demo CONDITION REPORT: Good used condition - shows some cosmetic wear associated with age including marks, light scratches. This Bose 901 Series III Active Equalizer is fully functional. Please see images / full video demo for more details. The following basic functionality tests were performed: 1.Playback via Bose 901 speakers (bypass and active), 2.Below 40 Contour Control, 3.High-frequency Contour, 4.Mid-Bass Contour, 5.TAPE Monitor Switch. Product Information: 901 Series III active equalizer Input Impedance: 60 k ohms (60 k?) Usable dynamic range: 106 dB @ 35 Hz Noise (A-weighted): 85 dB below 1 volt Distortion: Less than 1% THD at 1 kHz, 1 V input Min Impedance: 5 k ohms (5 k?) Maximum output voltage: 40 volts Maximum gain: 20dB at 16kHz normal dotted ceiling Compensation controls Below 40 Contour Control: Two position, eight-dB decrease at 40 Hz. High-frequency Contour: Continuously adjustable slider with center detent; shelving control with range of ±2.5 dB @ 4 kHz Mid-Bass Contour: Continuously adjustable slider with center detent; +3 dB, -5 dB adjustment over band from 80Hz to 260Hz. TAPE Monitor Switch: Replaces tape monitor switch on receiver or amplifier when equalizeer is connected in tape monitor circuit: Cabinet: walnut wood veneer Dimensions: 11.25W x 2H x 5D Weight: 2 lbs

This auction is for Bose 901 Series III Active Equalizer. It was recently professionally serviced. The copy of the receipt will be included with the purchase.Also, Its fully tested and demo included. Full demo is included here: DEMO: Full Demo CONDITION REPORT: Good used condition - shows some cosmetic wear associated with age including marks, light scratches. This Bose 901 Series III Active Equalizer is fully functional. Please see images / full video demo for more details. The following basic functionality tests were performed: 1.Playback via Bose 901 speakers (bypass and active), 2.Below 40 Contour Control, 3.High-frequency Contour, 4.Mid-Bass Contour, 5.TAPE Monitor Switch. Product Information: 901 Series III active equalizer Input Impedance: 60 k ohms (60 k?) Usable dynamic range: 106 dB @ 35 Hz Noise (A-weighted): 85 dB below 1 volt Distortion: Less than 1% THD at 1 kHz, 1 V input Min Impedance: 5 k ohms (5 k?) Maximum output voltage: 40 volts Maximum gain: 20dB at 16kHz normal dotted ceiling Compensation controls Below 40 Contour Control: Two position, eight-dB decrease at 40 Hz. High-frequency Contour: Continuously adjustable slider with center detent; shelving control with range of ±2.5 dB @ 4 kHz Mid-Bass Contour: Continuously adjustable slider with center detent; +3 dB, -5 dB adjustment over band from 80Hz to 260Hz. TAPE Monitor Switch: Replaces tape monitor switch on receiver or amplifier when equalizeer is connected in tape monitor circuit: Cabinet: walnut wood veneer Dimensions: 11.25W x 2H x 5D Weight: 2 lbs

Fully functional, one non-Bose slider knob (see pics)

Bose 901 Series IV Active Equalizer. Analog equalizer also works with the Bose 901 Series III.

Fully functional, one non-Bose slider knob (see pics)

Bose 901 active equalizers 100% working condition

Vintage 901 Bose speakers with Equalizer speakers re-foamed and equalizer has been re-cappedReady to go for another 30 yrs Thanks for looking

Used work fine.

Up for auction is this BOSE 901 SERIES III Acive Equalizer High Low Frequency for Bose 901 series speakers. Cosmetically in fair condition. Shows some signs of age but works properly. Please check pictures for condition. Thanks for looking and good luck.

Vintage Bose 901 Series IV Active Equalizer for Series III and IV LoudspeakersBose 901 Series IV Active EqualizerFor use exclusively with Bose 901 Series III and IV LoudspeakersInput: 110-120V AC 60HzSerial: 268178Cabinet construction: Genuine walnut veneer laminated to particle boardItem is used and tested in excellent working condition. There are very few very small marks to the top and side veneers, and there are no major cracks or gouges. There are a few light scratches in the aluminum top and face. The cord is free of any kinks or cuts. Includes only items pictured. Please view photos for more detail.Thank you 101323NSEJ-F1

This is a Bose Series lll Active Equalizer and it is in excellent condition. International buyers, please note:This item ships worldwide. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick up the item. Do not confuse them for additional shipping charges. US and international government regulations prohibit us from marking items under actual value or as “gifts”. Please be aware that if you return the item for a refund, the customs charges are not refunded to you. Thank you for your attention