Outstanding Marantz 1090 Amplifier – Classic Hi-Fi Power- Serviced -1-Year WRT

• Condition: Excellent – great working
• Damping factor: 45
• Input sensitivity: 1.8mV (MM), 180mV (line)
• Signal to noise ratio: 76dB (MM), 88dB (line)
• Output: 775mV (line), 1.5V (Pre out)
• Dimensions: 16.4″ × 5.7″ × 11.9″
• Weight: 20.9 lbs
• Year: 1977
• SKU: 12QE0056

Outstanding Marantz 1090 Amplifier

ABOUT

The Marantz 1090 is a late-1970s solid-state classic that captures the essence of Marantz’s warm, musical sound.

Rated at 45 watts per channel, it offers a smooth tonal balance, rich midrange, and effortless dynamics — perfectly suited for both vinyl and digital sources.

With its clean brushed aluminum faceplate, classic blue glow, and robust construction, the 1090 remains a favorite among audiophiles seeking reliability and true vintage character.

Fully serviced and recapped, this amplifier is ready to deliver the timeless Marantz listening experience for years to come.

Customer Service:

Once your item arrives, if you have questions about how your item functions or proper settings, please CONTACT US.

TRADE-IN PROGRAM

“If you have any vintage audios (receivers, speakers, cassette, reel to reel…) & want to upgrade with the serviced one, don’t hesitate to contact us for the best deal. You only need to pay for the difference between yours & mine….”

Note:

The actual color of the product may sometimes differ slightly from the photos due to lighting conditions, temperature, and the device used. Some angles in the photos may not fully reflect the product’s condition. Please read the description carefully and feel free to message us if you have any questions.

SPECS

Power output: 45 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 60kHz

Total harmonic distortion: 0.1%

Damping factor: 45

Input sensitivity: 1.8mV (MM), 180mV (line)

Signal to noise ratio: 76dB (MM), 88dB (line)

Output: 775mV (line), 1.5V (Pre out)

Dimensions: 16.4″ × 5.7″ × 11.9″

Weight: 20.9 lbs

Year: 1977

KEY FEATURES

45 watts per channel @ 8 Ω – classic Marantz warmth and clarity

Fully recapped, cleaned, and bias-adjusted for stable long-term operation

Phono and tone control sections calibrated for low noise and accurate response

Brushed aluminum faceplate detailed to original finish

Smooth, precise control knobs and switch feel restored

Tested over 3 hours continuous playback – zero hum or imbalance

REFURBISHED

This Marantz Model 1090 Integrated Amplifier has been fully restored, recapped, and cosmetically detailed by our restoration team.
Every circuit was carefully tested, every control cleaned, and every adjustment recalibrated to factory specification or better.

1. Electronic Restoration

• All electrolytic capacitors throughout the unit (preamp, tone control, power amp, and power supply) have been replaced with high-grade audio capacitors.
• Main filter capacitors upgraded with the same capacitance and voltage rating to maintain the original tonal character.
• All transistors tested for noise and DC drift; any weak or unstable components replaced.
• DC offset and idle bias current adjusted precisely using Fluke multimeter and oscilloscope for symmetrical and distortion-free output.
• Relay protection circuit cleaned and reconditioned for silent switching and safe speaker operation.

2. Control & Operation

• All knobs, switches, and potentiometers cleaned with DeoxIT D5 + FaderLube, ensuring smooth and noise-free operation.
• Input selector, tone, and balance controls recalibrated for accurate channel tracking.

3. Cosmetic Restoration

• Front black brushed-aluminum faceplate carefully cleaned and detailed to restore its original satin sheen.
• Lettering preserved and protected with anti-oxidation coating.
• Walnut wood case cleaned, re-oiled, and sealed with satin finish to highlight its natural grain.
• All knobs ultrasonically cleaned and hand-polished for a smooth metallic finish.
• Rear panel cleaned, all RCA and speaker terminals de-oxidized for firm contact.

4. Final QC & Test Run

• Amplifier underwent a 3-hour continuous load test using Audio Precision System One to verify output stability, heat balance, and frequency response.

Result:
This Marantz 1090 delivers the signature vintage sound—warm midrange, smooth highs, and solid low-end—exactly as intended in the late 1970s. Combined with its restored walnut case and clean black faceplate, it is both a collector’s piece and a reliable daily amplifier.

⚠️ Note: Listing includes the amplifier with wood case and antennas. 

SUGGESTED PAIRINGS

Matches beautifully with JBL L26, Pioneer HPM-40, or Marantz Imperial 6 speakers — delivering warm, full-bodied sound.

Combine with a Marantz 6100 or Dual 1229 turntable for a cohesive vintage setup.

💡 Buy as a combo and save $100 — message us for details!

PACKAGING & SHIPPING

Secure Packaging:

• Factory foam inserts and original cartons (if available)

• Additional internal padding and wrap for transit protection

• Double-wall outer box with corner guards and straps

Shipping Details:

• Dispatch Time: Ships within 3 business days

• Carrier: UPS Ground (tracked & insured)

• Signature Required: Yes (as buyer’s request)

• Transit Time: Typically 3–7 business days (USA)

International Shipping:

 We offer global delivery through the eBay International Shipping Program. eBay handles customs, duties, and tracking.

📦 Note: Packaging may vary slightly depending on unit size or availability, but safety and protection are always our top priority.

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Thank you for viewing our listing! Please kindly ensure you read all the provided information carefully!

We strive to describe all items honestly and accurately. However, as human beings, we may occasionally make mistakes. If you have any doubts or encounter conflicting information, please inquire before purchasing or making an offer

We kindly request that all buyers give us the opportunity to address any issues.

Payment Policy:

All buyers are required to make immediate payment or contact us within 24 hours to arrange payment, with payment received within 3 days. Offers submitted under the Best Offer feature are considered binding agreements and require immediate payment upon acceptance. Failure to adhere to these terms may result in substitution or cancellation of the transaction.

Payments must be accompanied by a valid shipping address listed as Confirmed. Payments with invalid shipping addresses will be refunded and may incur a processing fee deducted from the refund amount.

Shipping Policy:

This is for local pickup or we will ship it very carefully so that it arrives in good shape like it is now. Our customers’ satisfaction means everything to us. Once you get this item, feel free to contact us if it has any problems! I will try to answer any questions that you may have in a timely fashion.

All shipments are processed within 03 business days of payment, whenever possible. In the event of stock issues causing a delay, customers will be promptly notified, and alternative shipment arrangements will be made. Customers are responsible for any charges incurred due to failed delivery attempts or re-delivery.

Return Policy:

Our Free Support service must be utilized before requesting any return, for any reason.

Items may be exchanged within 30 days if defective or not as described, with a full refund of the purchase price if an exchange is unavailable.

If due to seller error, we will issue a prepaid return label or arrange for reimbursement of return shipping expenses as per this policy, not exceeding the original shipping cost.

The address for returning shipment: 10851 Capital Ave, Garden Grove CA 92843

Returned items may require inspection before determining fault. The item must be received in its original, unaltered condition with all original packaging. Electronic items cannot be opened or tampered with; sealed items must remain sealed, and “Mint” items must remain in “Mint” condition.

No returns will be accepted without first contacting us for Free Support, troubleshooting, or evaluation.

Warranty policy:

The warranty covers technical parts for up to 12 months from the date of receipt, provided there is valid evidence and the item remains sealed, unaltered, and has not been disassembled or internally inspected/repaired. Please note that shipping costs for warranty service will be the seller’s responsibility if the item is found to be defective.

⚠ Important Notice:

To ensure a smooth warranty process, we kindly request that you record a video while unboxing your package upon delivery. Any claims related to product damage or warranty service must be supported by clear video and photographic evidence. Please submit all required documentation to the official HQaudios email for prompt assistance.

***Failure to provide sufficient information as per our guidelines may result in the rejection of your request.

If you have any issues or dissatisfaction with our services, products, or policies, please refrain from leaving negative feedback immediately. Instead, contact us right away so we can provide you with the best possible solution and have the opportunity to improve our service quality!

Thank you for being a valued customer & Thanks for looking!

—————

Thank you for viewing our listing! Please kindly ensure you read all the provided information carefully!

We strive to describe all items honestly and accurately. However, as human beings, we may occasionally make mistakes. If you have any doubts or encounter conflicting information, please inquire before purchasing or making an offer

We kindly request that all buyers give us the opportunity to address any issues.

Payment Policy:

All buyers are required to make immediate payment or contact us within 24 hours to arrange payment, with payment received within 3 days. Offers submitted under the Best Offer feature are considered binding agreements and require immediate payment upon acceptance. Failure to adhere to these terms may result in substitution or cancellation of the transaction.

Payments must be accompanied by a valid shipping address listed as Confirmed. Payments with invalid shipping addresses will be refunded and may incur a processing fee deducted from the refund amount.

Shipping Policy:

This is for local pickup or we will ship it very carefully so that it arrives in good shape like it is now. Our customers’ satisfaction means everything to us. Once you get this item, feel free to contact us if it has any problems! I will try to answer any questions that you may have in a timely fashion.

All shipments are processed within 03 business days of payment, whenever possible. In the event of stock issues causing a delay, customers will be promptly notified, and alternative shipment arrangements will be made. Customers are responsible for any charges incurred due to failed delivery attempts or re-delivery.

Return Policy:

Our Free Support service must be utilized before requesting any return, for any reason.

Items may be exchanged within 30 days if defective or not as described, with a full refund of the purchase price if an exchange is unavailable.

If due to seller error, we will issue a prepaid return label or arrange for reimbursement of return shipping expenses as per this policy, not exceeding the original shipping cost.

The address for returning shipment: 10851 Capital Ave, Garden Grove CA 92843

Returned items may require inspection before determining fault. The item must be received in its original, unaltered condition with all original packaging. Electronic items cannot be opened or tampered with; sealed items must remain sealed, and “Mint” items must remain in “Mint” condition.

No returns will be accepted without first contacting us for Free Support, troubleshooting, or evaluation.

Warranty policy:

The warranty covers technical parts for up to 12 months from the date of receipt, provided there is valid evidence and the item remains sealed, unaltered, and has not been disassembled or internally inspected/repaired. Please note that shipping costs for warranty service will be the seller’s responsibility if the item is found to be defective.

⚠ Important Notice:

To ensure a smooth warranty process, we kindly request that you record a video while unboxing your package upon delivery. Any claims related to product damage or warranty service must be supported by clear video and photographic evidence. Please submit all required documentation to the official HQaudios email for prompt assistance.

***Failure to provide sufficient information as per our guidelines may result in the rejection of your request.

If you have any issues or dissatisfaction with our services, products, or policies, please refrain from leaving negative feedback immediately. Instead, contact us right away so we can provide you with the best possible solution and have the opportunity to improve our service quality!

Thank you for being a valued customer & Thanks for looking!