COPLAND
ARCIVES
SINCE 1984
CTA405
Integrated amplifier
Production start: 2005 / Ended: 2019
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. Rated at 50 watts per channel using the legendary 6550 beam power tubes in ultra linier configuration excellent performance is obtained with low global feedback. A complete line stage similar to the one found in the Copland CTA305 pre-amplifier is installed directly behind the input terminals, providing a low output impedance buffer between the amplifier interconnect cables and the level control prior to the power amplifier section.
CTA405 tube complement:
3 pc. ECC83 / 12AX7
2 pc. 6922
2 pc. 12BH7
4 pc. 6550 or KT88
CTA405 Specifications:
Tubes: 6550 x 4 / 12BH7 x 2 / ECC83 x 3 / 6922 x 2
Power output: 50W / channel at 4 / 8 ohms
THD.: Less than 1 % at all levels
Frequency response: 10 Hz to 100 kHz - 3 dB
Input sensitivity Line: 0,35 V for rated power
Input sensitivity RIAA: 3,5 mV for rated power
Input impedance Line: 33K ohms
Overall negative feedback: 17 dB
Output taps: 8 ohms, 4 ohms.
S/N ratio ( IHF-A ) More than 95 dB
Output polarity: Inverting
Power consumption: 250W
Nominal mains voltage: 115V or 230V
Factory set for destination country only.
Mains voltage range: +/- 12 %
Dimensions (mm.) 430 (W) 185 (H) 390 (D)
Wight: 25 kg.
