Vintage Bose 901 Series II Active Equalizer - EQ Fully tested and 100% functional; this EQ is very much needed if you want your 901 Series II speakers to sound their best. Cosmetically, it is very good exhibiting minor wear and a small spot where the veneer is starting to peel on a back corner (see pics).

Vintage Bose 901 Series II Active Equalizer - EQ Q23 Everything/Only what is shown is included. Any purchased item can be picked up at: Silas Deane Pawn 395 BROAD STREETMANCHESTER, CT 06040 Please notify us on all pick up orders so it doesnt get shipped by accident. Shipping charges will be refunded when picked up. We will always combined shipping for you. Be sure to add the items to your cart and purchase all items together, we will then only charge you the actual shipping cost. You will be refunded the difference.

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

Vintage BOSE 901 Active Equalizer Series II POWERS ON TESTED USED. As you can see in the pictures, there is some slight damage to the wooden case.

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)

When viewing on iOS or Android please click on See Full Description to see all the pictures. Bose 901 Active Equalizer Series II (Untested) Click image to enlarge Description When viewing on iOS or Android, please click on See Full Description to see all the pictures. Location – A01 FOR LOCAL PICKUP, PLEASE CONTACT US  TO SCHEDULE AN APPOINTMENT THANK YOU FOR VISITING MY AUCTION PLEASE READ FULL PRODUCT DESCRIPTION BEFORE BIDDING COMES AS PHOTOGRAPHED UNLESS OTHERWISE NOTED     Bose 901 Active Equalizer Series II (Untested) Used - In fair physical condition - Power on is the only testing performed - with scuffs and/or scratches, swollen perhaps water damaged wood case. GRADE “D” SOLD AS-IS (Power on is the only testing performed)   “Key Functioning” Tested to power-up. We cannot provide technical assistance with installation or use. Factory reset, or any other software needs, are the responsibility of the buyer. Buyer assumes all responsibility for installation and setup. Please ask any needed questions before purchasing. See PICTURES FOR COSMETIC Condition.   You Will Receive: x1 Bose 901 Active Equalizer Series II (Untested)   You Will Not Receive: Cables / Users Guide Any items not specifically mentioned or photographed When viewing on iOS or Android, please click on See Full Description to see all the pictures.     !!! This item will ship via USPS Ground Advantage, USPS Priority, or FedEx Ground !!!       Once your item arrives in satisfactory condition, PLEASE leave positive feedback for us, we have done the same for you. Leaving us positive feedback and Detailed Seller Ratings allows us to keep bringing you great deals at even better prices! If you changed your mind or purchased by mistake, there is a 20% restocking fee   Please contact us before leaving negative feedback We will do everything we can to repair or replace the item   GRADE DEFINITION GRADE “NEW” = NEW, UNOPENED – IN ORIGINAL PACKAGING GRADE “A” = LIKE NEW PRODUCT IN OPENED ORIGINAL PACKAGING OR OVERALL EXCELLENT CONDITION WITH MINOR SIGNS OF WEAR GRADE “B” = USED, IN GOOD WORKING CONDITION, MINOR TO MODERATE SURFACE SCRATCHES / SCUFFS, AND/OR MINOR CRACKS IN PLASTICS GRADE “C” = POWERS UP BUT HAS MAJOR DAMAGE AND/OR MISSING PARTS, DISCOLORATION, ETC. GRADE “D” = AS-IS FOR PARTS OR REPAIR. PAYMENT TERMS Please note that payment must be made within 16 days after the auction has ended. Payments not received within the allotted time will automatically be turned in for non-payment. SHIPPING TERMS Shipping via FedEx Ground Shipping via FedEx Ground. Please be aware that FedEx can NOT ship to P.O. Boxes, APO, or FPO addresses. All orders going to APO/FPO, U.S. Territories and Protectorates will be shipped via USPS Priority Mail. Please contact our Customer Service for a shipping quote. Shipments to these locations are limited to 70 lbs and a maximum of 130 inches (3.3 m) in combined length and girth. International Shipping offered through ebays Global / International Shipping COMBINED SHIPPING YES, we offer combined shipping. All combined orders will be shipped FedEx Ground. Please review the criteria for combined shipping with Z-Tech: v If you purchase more than one item from us, you can save on shipping by having your items combined. v Z-Tech will combine up to 10 items on a single invoice. v All items being combined must be paid for within our 16-day payment policy (see under “Accepted Payment Methods”). v All items must be paid for on a single invoice. If items are paid for separately, they will not be eligible for the combined shipping discount. Please request a combined shipping invoice from us via email or phone prior to paying for your items to receive this discount. LOCAL PICKUP We offer local pickup for our customers who want to save money and not pay for shipping.  Please be aware that while you will not be paying for shipping costs, you will be paying a Texas State Sales Tax of 8.25%. Items must be picked up within 5 business days of when they are available. If you would like to pick up your item(s) in person, then you must follow these steps below: v Contact us a minimum of 24 hours before you plan to pick up your item(s) to let us know you are coming, so we may have your item ready. v Visit us between the hours of 10:00 am and 4:00 pm (Central Standard Time), Monday through Friday. v Provide our staff with a copy of your invoice, a form of identification, and a signature for your item(s). RETURN & WARRANTY Return Policy If the item you purchased was misrepresented by us or damaged in shipping, you can obtain a full refund. To get a full refund, you must call or email us within 14 business days of receiving your item. Returns require our approval and return authorization and must be returned to us before we can issue your refund. Please note: we record serial numbers to discourage fraud. If you changed your mind and do not want your item, we can authorize you to return the item for a refund of the cost of the item, (minus a 20% restocking fee). We will not accept returns in cases when the condition of the item and/or retail packaging has been compromised, changed, modified, or altered. The buyer is responsible for return shipping and is required to complete a “Mutual Agreement to Cancel the Transaction Form” through eBay. Local Pickups: Returned items that were picked up locally from our store will be charged a processing and restocking fee of 20% of the sales price of the item. No restocking fee will be charged in cases where it is found Z-Tech was erroneous in the listing description. 30 Days: Returns will not be accepted beyond 30 business days after the item has been delivered to or picked up by the buyer. Return Authorization: All returns require a proper return authorization by a Z-Tech customer service agent. Any item(s) listed as “Parts or Repair Only” or “Sold AS IS”  are ineligible for a refund or exchange, these items are sold AS-IS with NO warranty. WARRANTY Please note: We are not an authorized dealer for any of the products we list on eBay. Therefore, we do not guarantee that the item featured in this listing will be covered by the manufacturers warranty or support.   Thank you !!HAPPY BIDDING!! 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Vintage BOSE 901 Active Equalizer Series II POWERS ONDOESNT WORK NEEDS REPAIR NO RETURNS. As you can see in the pictures, there is some slight damage to the wooden case.

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

Bose 901 active equalizers 100% working condition

Recently recapped and in very good working condition. Also an excellent cosmetic condition and sounds great.

BOSE 901 Speakers Active Equalizer Series I or II Testing Working w/ cables Tested working with speaker cables. ready to use. Fast free shipping to the lower 48 states.

Item is not tested. We dont have a way to test the unit. No accessories included. All the items included are what you see in the pictures. Item is sold AS IS for parts or repair. No returns accepted.

BOSE 901 Active Equalizer Series II SUPER CLEAN POWERS ON TESTED USED VERY CLEAN, EXCELLENT CONDITION, minor signs of wear. Tested Power, Clear audio signal in and out of Amplifier Connections side I consider myself a pretty competent audiophile, I have a ton of Hi-Fi gear, and have repaired and restored receivers, turntables, cameras, computers, cars etc. I have NO CLUE how this thing works... I hooked up the Amplifier Connections side and it sounded awesome, I could hear some subtle differences in tone when running the dial around. I didnt understand the Tape recorder connections protocol, so I can neither confirm or deny that they are functioning properly. There was audio but it was very faint... PHOTOS ARE OF ACTUAL ITEM YOU WILL RECEIVE PLEASE DONT HESITATE TO MAKE AN OFFER OR ASK ANY QUESTIONS!!! ****************************************************************************************************************************** I normally ship 1-2 business days (or same day) from cleared payment! (Before 4PM EST) Please do not hesitate to reach out with any questions or concerns before bidding or purchasing! I am normally very responsive and will return messages within the hour or end of day at the latest. Thanks, and good luck!!! *** DISCLAIMER: I AM NOT AN EXPERT COLLECTOR OF THESE ITEMS*** All information provided is to the best of my untrained eye. Please carefully review images of ACTUAL items for more details ***Listing is for ONE item***

Item: Vintage Bose Series II 901 Active Equalizer. SOLD AS-IS NO RETURNS. Condition: UNTESTED, was plugged in and light comes on, no ability to test otherwise, sold as is for parts or repair, some chipping on the edges and corners and general wear all over, knob comes off fairly easily, not sure if its original but the selector moves normally when knob is attached. SOLD AS-IS NO RETURNS. See all photos for exact condition and check out my other listings. Tax / Shipping / Payments: Sales tax will be charged in several states. Please check the shipping and payments for a list of the states where sales tax is collected. All items ship either standard USPS or Fed Ex unless otherwise noted or requested. I strive to ship items within 1 business day of received payment. You may upgrade to expedited shipping at an additional cost. Please contact before payment if this service is required. Customers needing international shipping are not eligible for free shipping and will be required to pay the full shipping rate of their choice as directed by the Global Shipping Program rates. This is a fixed cost calculated by eBay and cannot be reduced. They may also be responsible for duties and fees associated and are 100% responsible for any additional fees that could come along. Returns/Customer Service: No Returns on this item. Please DO NOT open a case through eBay without first contacting me to resolve any and all issues that could come up during a transaction. Customer satisfaction is very important to me and I am sure I can remedy anything that could come up. If there is anything that would lead you to give anything less than 5 star feedback please contact me prior to leaving feedback so I can work with you to make you transaction a pleasant one. Disclaimer: All items are sold in as-is condition and buyer/bidder should fully evaluate and understand what they are buying before purchasing. There are no warranties expressed or implied on any items both new and used. All items are eligible for the 30 day return policy unless otherwise noted. All items must be paid for within 3 business days or a nonpayment case will be opened and buyer will be reported. Feel free to contact me with any questions I will do my best to respond promptly. Thanks For Looking

Enhance your audio experience with the Rare Vintage Bose 901 Active Equalizer Series II Tape recorder/Amplifier. This high-quality unit boasts 2 channels and 4 inputs, along with 4 outputs for ultimate control over your sound. The wooden exterior adds a touch of retro style to your setup. This unit, manufactured in an unknown location, is perfect for audiophiles and music enthusiasts alike. It features digital technology and is a great addition to any home audio system. Get your hands on this unique Bose 901 Active Equalizer Series II and take your listening experience to the next level. Now for the human response: selling this for a buddy, I tested it on my home PA system and it is definitely functional. Add those classic Bose sparkling highs. ????

I bought this as a back up and am downsizing. It was purchased unopened and I used it briefly before putting it away. I have series VI but prefer the (in my opinion) somewhat warmer sound of series III and IV, and it made my series VI sound sweet). The story behind IV B is they only made a very limited number of them as Series IV was being replaced by Series V. I was able to find on line from Bose that the series IV eq supply was used up and they had to utilize series V chassis, parts and cases to make this eq to have the correct series III and IV curve. The best part of it was Bose began to make the equalizers so much better at this time (1983 for this one, the beginning of the series V era) with much better quality everything. It would be a challenge to find a nicer one that this, if you could find one at all! This has some insignificant marks on the case, stains on the box and is really very nice. It sounds warm and wonderful as it should. Don't miss it! Best one you’ll likely ever see!

SEHRGUT ERHALTENE BOSE 901. ACTIVE EQUALIZER SERIES II. BOSE. CORPORATION IST FUNKTIONTÜCHTIG PRIVAT VERKAUF DAHER KEINE GARANTIE UND RÜCKNAHME NACH DEM KAUF

This Bose 901 Equalizer is designed to work with the Bose Series 1 901 speakers. The speakers will not sound good without it.Simply connect the eq through the tape loop or pre-out / main-in on your amplifier or receiver. Or if you are using only a single source such as a turntable or CD player connect the eq between the receiver and the source component. Item light comes on but flickers. This is untested with components. Please see photos for details.

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

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

Bose 901 Series IV B Equalize! I bought this as a back up and am downsizing. It was purchased unopened and I used it briefly before putting it away. I have series VI but prefer the (in my opinion) somewhat warmer sound of series III and IV, and it made my series VI sound sweet). The story behind IV B is they only made a very limited number of them as Series IV was being replaced by Series V. I was able to find on line from Bose that the series IV eq supply was used up and they had to utilize series V chassis, parts and cases to make this eq to have the correct series III and IV curve. The best part of it was Bose began to make the equalizers so much better at this time (1983 for this one, the beginning of the series V era) with much better quality everything. It would be a challenge to find a nicer one that this, if you could find one at all! This has some insignificant marks on the case, stains on the box and is really very nice. It sounds warm and wonderful as it should. Dont miss it! Best one you’ll likely ever see!

This vintage Bose 901 Series IV active equalizer is a rare find for any audiophile. With its sleek brown exterior, it adds a touch of sophistication to any home audio setup. Designed specifically for use with Bose 901 Series IV speakers, it delivers unmatched sound quality and clarity. The equalizer has been well-maintained by its previous owner, ensuring its excellent working condition. Its brand, Bose, is renowned for producing top-of-the-line audio equipment, and this equalizer is no exception. Add this piece to your collection and take your listening experience to the next level. Item is used and does show some ware but overall still displays great and works as you can see the power is lit up. If you have any questions please let ask me or refer to the pictures as everything is sold as is. Before you go check out my other listings. Thanks for stopping by.

I bought this as a back up and am downsizing. It was purchased unopened and I used it briefly before putting it away. I have series VI but prefer the (in my opinion) somewhat warmer sound of series III and IV, and it made my series VI sound sweet). The story behind IV B is they only made a very limited number of them as Series IV was being replaced by Series V. I was able to find on line from Bose that the series IV eq supply was used up and they had to utilize series V chassis, parts and cases to make this eq to have the correct series III and IV curve. The best part of it was Bose began to make the equalizers so much better at this time (1983 for this one, the beginning of the series V era) with much better quality everything. It would be a challenge to find a nicer one that this, if you could find one at all! This has some insignificant marks on the case and is really very nice. It sounds warm and wonderful as it should. Dont miss it!