• PST 100 MKII: Combo Valve & Transformer Preamp
In a transformer, however, the magnetic circuit can be ultra linear when the very best core materials are used. The sound of such materials is much more musical and detailed compared with the best resistors. So Ypsilon produced, in-house, a special transformer attenuator with 31 taps.
The active gain stage is a no – feedback s.e. triode, transformer coupled. The power supply uses valve rectification and choke regulation. Wiring is made with custom made pure silver wire. The transformer attenuator is placed after the valve stage, preserving the purity and micro details of the signal.
The maximum attenuation is 52db and maximum gain is 12db. Output impedance is 150 Ω max. PST is the pinnacle in preamplification. It is a must have component for building a “no holds” system.
PST 100 TA
PST 100 is also available without the valve stage for systems that don’t require additional gain. This version is equipped with the transformer attenuators and is called PST 100 TA. Notice that it is fully upgradeable to the full version at any time by returning to factory.
5 Hz - 100K Hz / -3db
x10 (20db) - (PST 100 MKII)
x1 (0db) - (PST 100 TA)
150 VA max
15.75 x 16.15 x 7.1" (WxDxH)