The Bose 802-C System Controller is a dedicated professional audio processor specifically engineered for the legendary Bose 802 Series loudspeaker systems, highly regarded for its essential role in shaping the signature Bose live sound performance. As an important part of classic Bose professional audio setups from the 1980s and 1990s, the 802-C remains sought after by vintage pro audio enthusiasts, musicians, and collectors who value authentic Bose system integration.

Designed to work exclusively with Bose 802 speaker systems, the 802-C System Controller provides active equalization, frequency contouring, and precise signal processing that allow the speakers to achieve their full acoustic potential. Without the controller, the Bose 802 system cannot properly reproduce its intended bass response, vocal clarity, and wide-range performance.

The Bose 802-C is known for delivering balanced tonal control, improved low-frequency extension, cleaner midrange reproduction, and the spacious sound presentation that made Bose portable PA systems famous in clubs, rehearsal rooms, churches, cafés, and live event environments worldwide.

Originally developed for professional live sound applications, the Bose 802-C System Controller today remains an important companion piece for vintage Bose 802 setups, especially for collectors and audio enthusiasts seeking the authentic classic Bose sound experience with proper system performance and reliability.

⚠️ Important Note – Vintage Market Risks

When purchasing vintage audio equipment over 40  years old, actual condition is far more important than the model itself. On the general market, many units may suffer from aging components, inconsistent restoration quality, or altered sound performance due to improper servicing.

At HQaudios, every unit is carefully restored, tested, and verified using a structured technical process to ensure stable performance and preserve the original JBL sound signature. This provides a significantly safer and more reliable buying experience compared to unverified vintage listings.

Note: This item is designed for the U.S. market and operates on U.S. power standards. If you are located outside the United States, please contact us before purchasing so we can help confirm compatibility for your setup.

HQaudios – Restored & Tested Unit

This product has been fully inspected, restored, and sound-tested by HQaudios following standard technical procedures to ensure stable performance and preserve the original Bose sound signature.

• Condition: Very Good – fully cleaned & restored

• Warranty: 1 year (repair or replacement)

Free Support: Must be used before requesting return

• Ready to use, no further adjustment required

• SKU: DQE1575

Why This Listing

Unlike unverified vintage units on the market, Bose 802-C System Controller has been restored and thoroughly tested, ensuring stable sound quality and reducing the risks associated with buying vintage equipment.

Customer Service

Once your item arrives, if you have questions about operation or setup, please contact us anytime. We are here to support you before and after purchase.

Note on Product Images

The actual color and appearance of the product may slightly vary due to lighting conditions, camera settings, and display differences. Some angles may not fully reflect every detail of the item. Please review all descriptions carefully and feel free to message us for clarification.

**TRADE-IN PROGRAM

If you have any vintage audio equipment (receivers, speakers, cassette decks, reel-to-reel, etc.) and want to upgrade to a serviced unit, please contact us for the best offer. You only need to pay the difference between your item and ours.

• Type: Professional Active Equalizer / System Controller

• Designed For: Bose 802 Series Speaker Systems

• Modes Supported:

• Full Range Mode

• Passive Bi-Amp Mode

• Active Bi-Amp Mode

• Input Connections (per channel):

• 1 × Balanced Female XLR

• 1 × Unbalanced 1/4" Phone Jack

• Output Connections (per channel):

• 2 × 1/4" Phone Jacks
  (depending on selected operating mode)

• Input Impedance:

• Balanced: 4kΩ

• Unbalanced: 42kΩ

• Electronic Crossover Frequency:

• 180Hz (Bi-Amplified Mode)

• Maximum Output Level:

• 4 Volts (+12dB into 600Ω, 50Hz–16kHz)

• Total Harmonic Distortion (THD):

• Less than 0.02% at 1 Volt (0dB)

• Less than 0.2% at 8 Volts (18dB)

• Output Noise:

• Less than 20uV (-9dBV) A-weighted

• Power Requirements:

• 120V AC, 50–60Hz

• 220V AC (European Version)

• 100V AC (Japan Version)

• Power Consumption:

• 3.5 Watts

• Dimensions:

• 1.75" H × 10" W × 5" D

• (4.4 × 25.4 × 12.7 cm)

• Weight:

• 1.97 lbs (0.895 kg)

• Rack Mount Compatibility:

• Fits standard 19-inch rack with optional RMK-8 Rack Mount Kit

Active EQ specifically tuned for Bose 802 speakers

Automatic switching network for different operating modes

High-cut & low-cut filters

Subsonic and ultrasonic band-limiting filters for cleaner professional audio performance

Original condition issues

• Surface wear with scratches and signs of aging on the chassis

• Age-related wear on internal components, potentially affecting signal consistency

HQAudios Restoration Process

• Exterior carefully cleaned while preserving original condition and character

• Internal circuitry inspected and serviced where necessary

• Input/output connections cleaned and treated

• Signal path checked and calibrated for proper operation

• Reassembled and tested under working conditions

Results after restoration

• Signal is stable and consistent under normal operation

• Unit responds correctly across its intended EQ range

• Noticeable improvement in clarity and system control when paired with Bose 802

• No abnormal noise or signal drop observed during testing

The unit has been confirmed fully functional and stable by HQAudios

• Ideal companion for Bose 802 Series I & II speaker systems

• Perfect for live sound setups: small venues, cafés, clubs, churches

• Suitable for rehearsal spaces and band practice environments

• Great for vintage pro audio collectors seeking a complete Bose 802 system

• Recommended for users who want to achieve the authentic Bose 802 sound performance with proper active EQ control

Note: The Bose 802-C System Controller is essential for unlocking the full acoustic potential of Bose 802 speakers. Without it, the system will not deliver its intended frequency response and signature sound dispersion.

Secure Packaging:

• High-density foam inserts with 5-layer corrugated cartons

• 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!