PV8 Vacuum Tube Pre-Amplifier congrad (sold )8/10

by **libertie5828** Sun May 09, 2010 5:02 pm

[b]PV8 Vacuum Tube Pre-Amplifier[/b]

The PV8
superceded the PV5. It was the first all-tube zero-feedback design from
conrad-johnson. The basic audio circuit of the PV8 is modular, built
from individual gain blocks consisting of a triode amplifier direct
coupled to a cathode follower. The phono stage consists of a gain
block, a passive RIAA network, and a second gain block. The line stage
consists of a single gain block. These stages use polypropylene
capacitors bypassed by a polystyrene capacitor for the output stages.
Even the main dc power supplies used polypropylene capacitors - there
are no electrolytic capacitors in the audio circuits or their related
power supplies. Paralleled triode sections at the phono input yield
nearly 3 dB improvements in the signal to noise ratio over a single
input tube (as used in the earlier PV5).

Features:
Inputs/Outputs
— Phono, Tuner, Auxiliary, monitor and recording facilities for two
tape decks with dubbing from Tape 1 to Tape 2. One amplifier (Main)
output

Controls:
Selector, Tape 1/Tape 2, Source/Monitor, Mode (Left, Right, Stereo, Stereo Reverse, Mono), Balance, Power, Volume.

Auto muting to suppress warm-up transients.

Selling Price RM 2800.00
Contact No : 017 234 6116