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Copland CTA405 Integrated Valve Amplifier
COPLAND CTA-405, Stereo Valve Integrated Amplifier with five line-level inputs and built-in RIAA Phono Stage for MM and high-output MC Cartridges.
[Finish: Silver, Black]
Description
The CTA405 amplifier offers the unique possibility to explore the authority of classic high quality valve amplification. Lifelike dynamics and greatest sense of overall musicality.
The CTA405 is an integrated valve amplifier with five line-level inputs, including a tape monitor loop, and a built in RIAA phono circuit accommodating moving magnet and high output moving coil cartridges.
A complete line stage similar to the one found in the Copland CTA305 preamplifier is installed separately together with a dedicated power supply, providing a low output impedance buffer between the amplifier interconnect cables and the level control prior to the power amplifier.
The push pull output stages consist of a pair of matched 6550 power valves in fixed ultra-linear configuration, delivering the low distortion of triodes combined with the power of tetrode valves.
The operation point of the output stage is set for class AB operation. In practice, this means that the first 50% of the output power is provided in class A condition.
The output transformers are highly critical components of the valve amplifier. Decades of experience in this particular field of audio electronics are incorporated in our design of these critical parts of the valve amplifier, and excellent specifications can be measured at more than twice the rated output power of 50 W per channel chosen for this construction.
Due to the outstanding performance of the Copland output transformers, superb linearity is achieved before feedback is employed; reducing the requirements for internal lag compensation networks and ensuring high stability after the 18dB negative feedback loop is closed.
The CTA405 is able to provide what we consider an extraordinarily accurate reproduction of music without any tendency towards listening fatigue, featuring strong dynamics and a wide flexibility in the choice of speakers.
The CTA405 employs motor driven volume control and can be fully controlled by the Copland RC102 remote control unit.
Specifications
FEATURES | SPECIFICATIONS | ||||||
---|---|---|---|---|---|---|---|
11 Vacuum tube design | Valves | : | 6550 4pcs. | ||||
Magnet Phono RIAA Preamplifier | : : : | 2BH7 2pcs. 6922 2pcs. E83CC 3pcs. | |||||
Inputs : Six | Rated power | : | 50W / channel at 4 / 8 ohms | ||||
Tape Outputs : One | THD | : | Less than 1 % at all levels | ||||
Record Monitor | Frequency response | : | 10 Hz 100 kHz – 3 dB | ||||
All 1% Precision Film Resistors | Input sensitivity Line | : | 350 mV for rated power | ||||
All Polypropylene film capacitors | Input sensitivity Phono | : | 3,5 mV for rated power | ||||
Shielded Power Transformer Toroidal-Core | Input impedance Line | : | 33 K ohms | ||||
Ext. 12V remote power on/off trigger | Input impedance Phono | : | 47 K ohms | ||||
IR Remote Control | S/N ratio ( IHF-A ) | : | More than 95 dB | ||||
Motor Driven Volume Control | Power consumption | : | 250 W | ||||
Nominal mains voltage | : | 115V or 230V | |||||
Factory set for destination country only | |||||||
Mains voltage range | : | +/- 12 % | |||||
Dimensions (mm.) | : | 430 (W) 185 (H) 390 (D) | |||||
Weight | : | 25 kg |
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