COPLAND CTA 408 AMPLIFIER
He Copland CTA 408 is a stereophonic integrated amplifier that is an ideal choice for those who prefer to concentrate their amplification electronics in a single chassis, while maintaining the performance of a separate preamplifier and power amp. Thus, it incorporates details such as separate phono inputs for moving coil and moving magnet capsules, inputs / outputs for monitoring, a dedicated headphone amplifier and an advanced starter system that drastically prolongs the life of the tubes. But the fundamental characteristic of the CTA408 is that its interior is a clear reflection of the technological advances made in recent decades in terms of optimizing circuits for audio applications, making it one of the most elaborate products of its kind at the moment. . Among the most relevant engineering details, the use of attack stages based on vacuum tubes supported by MOSFET transistors and the spectacular KT150 power tubes in the output section stands out. In the CTA408 we also find numerous individual power supplies designed to work with a constant signal, thus avoiding that the fluctuations present in the signal coming from the electrical network affect the input stages. The new Copland also includes output transformers designed and tuned by the Scandinavian firm, a headphone amplifier configured in Class A and a phono circuitry executed entirely with discrete components, based on audiophile grade J-FET transistors and mounted in a separate enclosure. shielded to minimize noise. Characteristics: - Integrated amplifier to reference tubes. - Circuitry associated with attack valves based on MOSFET transistors. - Outlet section based on KT150 valves (2 per channel). - Phono preamp circuitry based on J-FET transistors. - Separate phono inputs for MM and MC capsules. - Output transformers designed and tuned by Copland. - Advanced starting system that maximizes the useful life of the valves. - Power output: 2 x 75 W continuous into 3/8 ohms. - Frequency response: 5 - 100 kHz (cut-off points at -3 dB). - Headphone amplifier gain: 17.5 dB. - Phono input impedance: 47 kohms (MM); 50-100-470 ohms (MC). - Signal / noise ratio: greater than 90 dB. - Dimensions: 435 x 220 x 460 mm (W x H x D). - Weight: 26 kilos.