Quad Elite QSP Stereo Power Amplifier
The Quad Elite QSP stereo power amplifier is a by-product of the famed Quad 909 Stereo. This product was designed in keeping with the traditional built of QUAD Power Amplifiers, but is right up with the latest technology and the finest audiophile components available. With 140W per channel into an 8 ohm load, and plenty more into lower impedances ensures that there is ample power into a wide range of speakers, including the QUAD ESL range.
Current Dumping - The Quad Elite QSP stereo power amplifier incorporates QUAD's patented current dumping technology developed by QUAD's founder Peter Walker, and is one of the finest audio amplifiers available. One of the few truly innovative amplifier topologies, it is essentially a combination of two amplifiers to give the best of both in each channel. The current dumping circuit like the Quad QSP Amplifier consists of a very high quality class A low-power amp which provides the details of the signal, while a high-power current dumping section provides the grip to keep the speakers under control. These two amplifier circuits are combined with a precision network to perfectly impose the finesse of the class A output onto the power of the current dumper. This technology eliminates the problems of crossover distortion, quiescent current adjustment, thermal tracking and transistor matching. There are no internal adjustments or alignments and the choice of power transistor types is less restrictive.
The Quad Elite Series has been developed employing the strongest design features derived from its 99 series predecessor, but exhibiting updated internal audiophile-class components, highly specified transformers, multi-layer circuit boards and the latest, most advanced software available.
Building upon the classic Quad sound but adding increased clarity and definition, the series ensures that the quality of musical performance is more accessible and conveys the actual message of the artist. Intended as a fully integrated system, each Elite series model works best when paired with one another. Each product in the Quad Elite Series is enhanced according to the highest of our engineering standards to ensure that ease of use, seamless connectivity, fully balanced audio signals and intelligent control systems that allow complete control via the remote handset is achieved.
Encased with a sleek new modern aluminium casework design in deep grey with a matte black front panel which maintains Quad's bold but stylishly elegant aesthetic. Constructed using superior class cast alloy which ensures that quality is according to Quad's standards and in turn guarantees a valuable investment that will last a lifetime whilst garnering much merit over years of use. The Quad Elite Series includes the Elite CD-S CD player, Elite CD-P CD playerpre-amplifier, Elite Stereo power amplifier, Elite Mono power amplifier, Elite FM tuner and Elite Pre pre-amplifier.
Quad Elite QSP Stereo Power Amplifier Specification:
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Power Output 140W into 8Ω (<0.01% THD at 1kHz)
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Total Harmonic <0.004% (100W at 1kHz)
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Distortion (THD) <0.025% (100W at 20Hz - 20kHz)
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Output Impedance 0.05Ω in parallel with 1.5mH
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Frequency Response -1.0dB at 1Hz and 55kHz, ref. 1kHz
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Power Response -0.25dB at 20Hz and 20kHz, ref. 1kHz
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Input Sensitivity 760mV (RCA line input)
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Input Impedance 10kΩ (balanced)
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15kΩ (unbalanced)
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Crosstalk -90dB at 1kHz (input loaded with 600Ω)
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Signal-to-Noise Ratio (ref. 140 Watts) 108dB (20kHz measurement bandwidth)
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Stability Unconditional with any load and input
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(W × H × D) 328 × 149 × 270 (mm)
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Weight 12.5kg
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