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The goal of the Blue Circle Audio CS series has always been to produce an integrated amp that focuses on performance-per-dollar, not on cosmetics or bells and whistles. The focus is on the stuff that makes music: the guts, the circuitry, the power supply; not on cosmetics or a bunch of options that most people don’t really need. In order to keep the price down the design simple but functional. The chassis is aluminum not steel'. The faceplate is the standard Blue Circle stainless steel.
There are only three single-ended line-level inputs, no tape loops or preamp outs. The front panel has only a power button, a laser-trimmed Alps volume control, and an input selector. There is just one set of speaker terminals on the back panel. But if you take a look under the hood where it really counts, you will see that this is not a typical entry-level amplifier.
The CSD preamp section is based on the BC reference quality BC107 line stage preamp. This precision-biased class A/B single-ended parallel topology was developed by Gilbert Yeung and is exclusive to Blue Circle Audio. The output stage is derived from a unique class D design that he developed for the new 2K series of power amps. It produces an extremely conservative 145 watts into 8 Ω and 290 watts into 4 Ω. As with all Blue Circle components, power supply filtering is best described as very serious overkill. There is plenty of gas in the tank of this little hot rod.
TLP Audio is North America’s oldest and most knowledgeable Blue Circle audio dealer.
Standard features: 145 watts into 8 Ω and 290 W into 4 Ω. 3 line level inputs Laser-trimmed Alps attenuator Stainless steel faceplate and wood knobs
Optional features: Black Plexiglas, black aluminum, or custom wood faceplate Stainless steel knobs Custom cover colors Processor bypass loop RF remote volume control Onboard DAC and/or phono stage in a larger chassis
Specifications: Residual noise referenced to full output power, volume control at zero: >-105dB within audio band Tracking error: < +/- 0.2 dB Frequency response (10W into 8 Ω): 10Hz to 35kHz +0.00 dB, -0.2 dB; - 3.0 dB at >100kHz Distortion at 10 W into 8 Ω: < 0.3 % Voltage gain: 38.5 dB Input sensitivity (reference to 10 W) with volume control fully open: 0.1 V Input impedance: 100 kΩ
Shipping Weight: Approx 15 lbs
Customization If you have a special request, talk it over with us and we will give you a price. If you can dream it up, we can probably make it a reality.
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