The music interface par excellence

Your amplifier is the interface between your signal sources and your loudspeaker system. What is lost at this point remains lost forever – and conversely, it amplifies everything that comes in at the front. Sonic excellence is therefore extremely important here. The Copland CTA407 is a further development of the CTA405, which has been an object of desire for audiophiles around the world since its introduction more than a decade ago – and the best answer to demanding acoustic questions.

Reliability

Amplifiers are also everyday items. They must be stable and reliable – both technically and physically. Especially with tube amplifiers, the requirements for technical durability are enormous. The CTA407 counters these with special technologies. For example, it automatically adjusts to any tube in the 6550/KT88/KT120/KT150 family – so broken tubes due to incorrect operation are virtually impossible.

Design

The appearance of most Copland amplifiers is characterized by a certain luxurious purism. With the CTA407 tube integrated amplifier, Copland has taken its concept to the extreme and created one of – in our opinion – the most beautiful amplifiers of all time. There is no compromise on simplicity, yet a great deal of electronics is built in to support the amplifier's audio stages. The total of forty LED diodes on the front (10 for each tube) are the visual part of the CTA407 tube bias and diagnostic system. And yes, the LEDs can be switched off if you don't want to constantly read the status of your power tubes.

Equipment

The CTA407 features five line-level inputs, including a tape monitoring loop. The additional integrated phono preamplifier accepts both moving magnet and high-output moving coil cartridges. The CTA407 has a motor-driven volume control and can be fully controlled via the Copland RC102A remote control.

Performance

The push-pull output stages consist of a pair of matched power tubes in a fixed, ultra-linear configuration, which offer the low distortion of triodes and the power of tetrodes. A pair of 6550 or KT-family tubes in a push-pull configuration can deliver more than 100 watts of output power. The CTA407, however, deliberately attenuates the output power and delivers 2x 50 watts in high-biased Class A/AB mode. In practice, this means that the amplifier can deliver most of its power in Class A operation, and thus with low distortion and high musicality.

Sound

Thanks to the outstanding quality of the output transformers, the Copland CTA407 achieves excellent linearity before any feedback is applied. This reduces the need for internal compensation networks while maintaining high stability. The CTA407 offers extraordinarily precise music reproduction without causing listener fatigue. Long-term musical enjoyment with outstanding dynamics and great flexibility in the choice of loudspeakers. The vanishingly low self-noise of the amplifier is a godsend, especially for owners of high-efficiency loudspeaker systems.

Finishes and features

• Black and silver
• Fully remote controllable
• 5 RCA inputs
• Tape monitor loop
• MM and high-output MC phono preamplifier

Technology for great sound

• Tubes: 4x KT88, 2x 12BH7, 1x ECC83
  (optionally operable with 6550, KT90, KT100, KT120 or KT150)
• Automatic tube adjustment
• High Class A output
• Outstanding quality of the output transformers

Power output:
2x 50 W at 4 and 8 ohms

Distortion:
Less than 0.8% at all levels

Frequency response:
10-150,000 Hz (-3 dB)

Signal-to-noise ratio:
100 dB(A)

Power consumption:
300 W

Dimensions (W x H x D):
435 x 215 x 420 mm

Weight:
20 kg

Herstellerangaben:

Copland ApS.
Amalievej 23, 1st floor, right
1875 , Frederiksberg
Denmark
copland@copland.dk

Verantwortliche Person:

ATR – Audio Trade HiFi – Sales Company LLC
Wallufer Street 2
65343 , Eltville am Rhein
Germany
copland@copland.dk