We had recently completed two orders on triode preamp with input and output transformers. The outcome was very encouraging and three similar preamps are under construction with different triodes. We expect they will perform well , though with difference in sound character.

The following preamps are newly made with the same configuration – parallel feed output stage. Plate choke made by SILK audio (Thailand) are used on these preamps. It has 200H 10mA capacity and excellent frequency response.

We had selected suitable combination of plate choke and output transformers, and also caps to give the best result. Regulated filament supply and a series of CLCRCRC filter on high voltage to ensure low hum level on the output. The working point of the tubes are carefully chosen so as to get optimal performance.

VT-25 preamp using UTC input and Tamura output transformers. Tamura power transformer and choke. Price is $16800 hk.

Vintage 26 tube preamp using Tamura input and output transformers. Toroidal power transformer and Tamura choke. Price is $14800 hk.

Vintage 01A or 112A tubes can be used here. UTC input and output transformers. Toroidal power transformer and Tamura choke. Price is $14800 hk.