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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...[more]

darTZeel is proud to introduce the new CTH-8550 full featured integrated amplifier. This new product combines in one casing most of the good things musical lovers found in our flagship NHB series. The CTH-8550 features newly designed power output stages which include on board regulated power supplies for a very compact global layout. This new circuit brings outstanding transparency, speed,...[more]

Security and customization Each CTH-8550 is delivered with its own dedicated USB key which contains all customer information: owners name, serial number,  firmware versionVoltage range settings. The provided USB key will also allow for eventually updating either CTH-8550s firmware or software in the future.Casing Entirely designed with a dedicated 3D-CAD software, the new cabinet is m...[more]

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Copland DA215 is a high quality D/A converter with DSD capabilities using the ES9018 Reference 32-bit DAC in quad-mono configuration, 8 mono to 2 stereo configuration, four D/A converters per channel. It incorporates an asynchronous USB input, tree S/PDIF digital inputs, an analog input, two analogue outputs (fixed and variable) and a complete valve pre-amplifier with analog volume ...[more]

The DAC9 digital-to-analog converter decodes most current formats with state-of-the-art vacuum tube technology. Five digital connections - USB, RCA, BNC, AES/EBU, and Toslink - provide connectivity to all of your digital sources. Quad DAC architecture provides a balanced digital signal, wide dynamic range, and decoding resolutions from red book CD up to 384 kHz and native DSD sampling rates. A ...[more]

This integrated preamplifier produces a visual effect of abundance through its colours, forms and the optimal use of space. ...[more]

Circuitry Highlights Patent pending Krell iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. All signal gain is realized in the current domain using discrete, proprietary, multiple-output current mirrors with extraordinary open loop linearity. There are no generic integrated circuits or op amps used anywhere. Current...[more]

Circuitry Highlights Patent pending Krell iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. All signal gain is realized in the current domain using discrete, proprietary, multiple-output current mirrors with extraordinary open loop linearity. There are no generic integrated circuits or op amps used anywhere. Current...[more]

The ultimate objective is absolute neutrality. Why is it necessary to isolate? Isolation is necessary because when we listen to musical sounds in an acoustic setting, vibrations in the electronic equipment can affect them. These may originate in a solid source such as the floor or may be air borne such as sonic waves, and as a consequence will generate secondary vibrations in the equipment. The...[more]