Copland Audio Releases CTA407 Integrated Valve Amplifier

While its smaller brothers that have been launched previously featured a Hybrid configuration, employing Copland's double triode gain stage with MOS-FET buffering, the CTA407's power stages are also tube equipped.

The push-pull output stages consist of a pair of matched power tubes in a fixed ultra-linear configuration, providing the low distortion of triodes and the power of tetrode valves. According to the company, a pair of 6550 or KT-family tubes in push-pull configuration can deliver more than 100W of audio power. Moderating the power output, the CTA407 delivers 2x50W in high biased class A/AB mode - while the amplifier can deliver most of its power while operating in class A. 

Aleksander Maksimovic, Managing Director of Audio Magic, which represents Copland Audio in Australia, told StereoNET:

The CTA407 will automatically adjust for any tube in the 6550/KT88/KT120/KT150 family. The CTA407 servo system is not only a lossless automatization of the bias adjustment – it is an integrated part of the CTA407 internal high pass filtering, closely matched to the transfer function of the amplifying circuitry and a vast improvement to the overall fidelity of the amplifier.

The CTA407 employs five line-level inputs, including a tape monitor loop, a built-in RIAA phono circuit accommodating moving magnet, and high output moving coil cartridges. 

The CTA407 comes supplied with 4 x KT88, 2 x 12BH7, and 1 x ECC83 tubes, measures 435 x 215 x 390mm (W, H, D), and weighs 25 kg. The CTA407 employs a motor-driven volume control and can be fully controlled by the Copland RC102A remote control unit.

Aleksander continued:

The CTA407 can provide an extraordinarily accurate reproduction of music without tendency towards listening fatigue, featuring strong dynamics and a wide flexibility in the choice of speakers. The vanishing low perceived noise from the amplifier itself is a bliss, especially for owners of high efficiency loudspeaker systems.

First shown at the Munich HIGH END Show in 2022, the Copland Audio CTA407 Integrated Amplifier replaces the now-discontinued CTA408 priced at £6,500 RRP.

For more information visit Copland Audio