Created for the dedicated music lover, the CSA70 is designed to provide exceptional audio performance that belies its power rating and price. The CSA70 provides four digital inputs, four analogue inputs (inc moving magnet phono input), line out and Pre out connectivity, front facing 6.3mm headphone output, and a 70 Watts per channel power amplifier.
Contrary to its bigger brothers, the CSA70 does not employ tubes in the line stage. The CSA70 preamplifier section is a solid stage architecture with a vanishingly low distortion. It boasts the same power amplifier technology as the CSA100/CSA150 with a feedback structure inherently faster than conventional amplifiers and a wide large-signal frequency response. The amplifier is ruggedly constructed and designed to deal with the most awkward of dynamic loads that may be presented by the loudspeakers, and this contributes to the amplifiers excellent transient handling capability.
Signal path lengths throughout the CSA70 amplifiers are minimised by keeping the entire electric audio architecture on a single PCB-board, minimising susceptibility to RF interference and other extraneous noise pickups. The CSA70 employs a precision audio-grade motorised volume control. Contrary to most digital volume attenuators, it needs no additional electronics in the signal path.
The CSA100 integrated amplifier aims to combine the advantages of tubes and transistor amplification using the synectic design concept that previously has made Copland hybrid amplifiers widely acclaimed. Heavily featured, it provides four digital inputs, five analogue inputs and a 100 Watt per channel power amplifier
One tube is responsible for the CSA100 line amplification and the efficiency of this single tube layout is astonishing. The double triode tube runs at high voltage in a setup for maximum linearity, taking care of the voltage amplification only.
MOS-FET circuitry delivers the brute force driving the line stage output and feedback circuitry, thus securing a firm handshake between the world of electronic tubes governed by voltage and the current controlled transistor technology. If you prefer the warm and nice coloured charm of some older tube designs look elsewhere; the CSA100 tube line stage is made for monitoring. In this application the tube provides life, headroom and dynamics hard to find in amplifiers relying on solid stage technology only.
The single chassis is made of aluminium alloy to avoid magnetic interference. For the vinyl enthusiast, the CSA100 has RIAA input for moving magnet or high output moving coil cartridges. The amplifier also employs an excellent D/A converter with multiple S/PDIF inputs, PCM, and DSD capabilities using the ES9018 Reference 32-bit DAC in quad-mono configuration, 8 mono to 2 stereo configuration.
The CSA100 USB input implementation featurs USB 2.0 PCM 24/32 bit data transfer to 384 kHz, including native DSD64 and high resolution DSD128.
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