Here’s the listing with all source citations removed from the body text:
Cyrus Q-Power Stereo Power Amplifier — Grade B — Good | 50W/Ch Into 8Ω | Chainable for Bi/Tri-Amping | Fully Tested
The Cyrus Q-Power is a compact stereo power amplifier from Cyrus’s half-width range, built into the marque’s familiar die-cast aluminium chassis, designed and manufactured in England. It is a versatile amplifier intended for multi-room and AV use, featuring signal-sensing auto-start and a chain output facility that allows it to be used for bi-amping or tri-amping a system, or combined with further Q-Power units to distribute high-quality sound around the home at the touch of a button. In an AV context, a set of three Q-Power amplifiers can be used to provide 6 x 50W of amplification across all surround channels. This example presents in good condition with some visible marks and has been fully tested by Andrew in our workshop.
Condition: Grade B — Good. Please refer to our photographs for a full assessment of cosmetic condition.
Key Features
The Q-Power is rated at 50W per channel into 8Ω, with a peak-to-peak current delivery of 30A, giving it useful headroom for driving a range of loudspeakers. High-speed overload and thermal protection circuits are built in, giving reassurance in a variety of installation contexts. Cyrus positions the Q-Power as a way of giving a Quattro-based system a genuine 50W per channel, at a level of performance the company says cannot be matched by other single-box lifestyle systems, and the amplifier’s signal-sensing auto-start makes it well suited to multi-room and custom-install applications where a dedicated switch-on signal may not always be practical. The chain output facility is the amplifier’s standout practical feature, allowing an additional Q-Power (or Q-Powers) to be linked in for bi-amping or tri-amping a single system, or for building out multi-zone or multi-channel installations without needing a larger, more expensive amplifier.
Technical Specifications
(Source: Hi-Fi Database, cross-referenced with Cyrus Audio’s official product page)
- Type: Stereo power amplifier
- Continuous power: 50W per channel (both channels driven into 8Ω); 70W per channel (both channels driven into 4Ω)
- Current: 30A peak-to-peak
- Distortion: Less than 0.004% (1kHz into 8Ω); less than 0.01% (20Hz–20kHz into 8Ω)
- Frequency response: -3dB at 1Hz and 80kHz
- Sensitivity (RCA input): 380mV for 50W stereo into 8Ω
- Input impedance: 10kΩ (RCA)
- Chain output voltage: 380mV
- Signal-to-noise ratio: 110dBA
- Special features: Signal-sensing auto-start; chain output for bi/tri-amping and multi-room use; overload and thermal protection
- Country of Origin: England
- Dimensions (W x H x D): 215 x 73 x 360mm
- Weight: 4.6kg
Why Buy From Us
With over 40 years of experience in the Hi-Fi industry, we are well placed to assess and test equipment of this type. Every item we list is fully inspected and tested before sale — this unit was checked by Andrew in our workshop.
When you buy from us you can expect:
- Full inspection and testing prior to listing — not simply a visual check
- A 3-month guarantee on every item we sell
- Transparent descriptions with no omissions
- Professional packaging to ensure safe delivery
- After-sales support available by phone or email should you have any questions
Summary
A versatile and compact Cyrus power amplifier, well suited to multi-room, bi-amping, or AV surround-channel duty thanks to its chainable design, offered here in good condition with some visible marks and fully tested. This is a single-unit listing. Please feel free to get in touch with any questions prior to purchase.
