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The Reference 80S stereo amplifier continues Audio Research’s latest design effort in creating a vacuum-tube amplifier that not only redefines ultimate music reproduction, but does it in an incredibly beautiful package.  Outwardly, the 80S shares the same dimensions as the 160M. A single shallow whisper fan is built into the bottom plate. Flexibility is built-in, too, with XLR an...[more]

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The filtering is achieved with a bank of capacitors, totalling 300 000 μF. This supply concept, which ensures efficient energy transfer, allows immediate reaction on even the most abrupt transients. The Nagra Classic AMP is fitted with a traditional Nagra Modulometer on the front panel, showing the power of each output channel. An LED is also fitted to indicate saturations, exces...[more]

Front panel with LCD screen, similar to the Nagra CLASSIC DAC so that each input can be named. An intuitive menu allows access to custom settings as well as operating time. All functions are accessible via remote. Traditional Nagra Modulometer showing the output power. LED to indicate saturations or excessive temperature. Same dimensions as the other elements in the Nagra CLASSIC ra...[more]

Contrary to its bigger brothers, CSA100/CSA150 the CSA70 does not employ tubes in the line stage. The CSA70 preamplifier section is a solid stage architecture with a vanishingly low distortion. The CSA70 boasts the same power amplifier technology as the CSA100/CSA150 with a feedback structure inherently faster than conventional amplifiers and a wide large-signal frequency response. The...[more]

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]