Balanced(XLR) Tube preamplifier LS60
Circuit design ref Audio Research preamp True XLR In/out with K373 FET as loading
Specifications:
-True Balanced XLR IN/out , Circuit design ref. Audio Research -Using 2 x 12AU7 and 2 x 6DJ8 tubes,12AU7 as 1st stage with K373 as loading. - Using K373 FET as loading, Clear , high bandwidth and highly dynamic -PP coupling capacitor: SCR capacitor, metal film and carbon film resistor ~match tubes: EH 12AU7 x 2, EH 6922 x 2 : -100VA R Core Transfomer -LS-9D Power regulator board, -Tube rectify and tube regulation using 6Z4,12AT7,12B4A -B+ adjustable from 150V ~ 340V -V-03 Remote control (Balanced in/out version) -A-28 Chassis/case AC Power supply:110V/50Hz~400Hz , 220V (please specify when you order in factory setting) Dimension : :L430mm x D350mm x H100mm Colour : silver / black / gold Nett Weight :12kg ~plastic remote handset X 1 *optional full aluminum handset = HK$350./pc
Advantages:
Full balance with single end input and output . First stage using 12AU7 with Fet constant current source instead of cathode resistor, ouput using 6DJ8 as cathode follower.
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