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Philosophy guitar amplifier prior SS-20
Our motto and in this device - it sounds and sings LAMP here, but transistors are doing everything possible to enable it to sound at its full strength and uniqueness, not impeding, and helping LAMPE!
Features guitar amplifier prior SS-20:
-- Is full high-voltage power triode,
-- This is a complete renunciation of use in enhancing tract and processing, traditional in hybrid preamps operational amplifiers,
-- Is the use of special semiconductor amplifiers simulating triodnye harmonics and give the necessary work for the full amplitude signal lamps.
To breaks tube cascades operating in the "hot" conditions, can open fully, they need huge amplitude in a hundred or more volts. Dynamic properties inherent in full VTC preamps, achieved in the SS-20 that is due to the non-use of the section prior to strengthen OU inherent limitation signal on nutrition levels in 20-25, and the use of special stages, the amplitude can develop up to 250 V and having nonlinearity, such triode 12 AH7. Thus, we have been able to realize the full transfer of the dynamics of guitar signal, avoiding the usual hybrid "caught", as well as give sound SS-20 in nature.
Particular attention was paid and clean channel - here we just went on the road to a maximum transmission dynamics of guitar signal, with the simultaneous formation of a soft "nonlinear", inherent in the cascade triode vacuum. It also allowed to leave and "caught" and on "refining", which greshat many hybrid device when CLEAN-feed.
Architecture guitar pre-amplifier SS-20:
-- Two full-fledged channel and CLEAN DRIVE, with the possibility of the Drive-feed in two basic modes: a moderate regime sensitivity (CRUNCH), high sensitivity mode (LEAD);
-- A consistent gap (LOOP);
-- Ability to work as a specialist in Computer guitar amplifiers and speakers (nest OUTPUT), and directly in a mixer or a linear amplifier (OUT CAB.S.).
When building the internal structure of preamps was based on the principle of maximum use to strengthen and transform it nonlinear tube of the device. Thus, hybrid semiconducting part in limiting practically does not participate (except for use in the mode of preamps LEAD Gain LEAD level in more than 7) and the whole spectrum formed part precisely tube preamps. Note also another feature of the architecture SS-20: in preamps minimized the number is not involved in the processing of semiconductor cascades, and in the absence plug into the slot and SEND RETURN signal applied to the output OUTPUT through corrective chain directly with the output triodnogo cascade. Therefore, to connect with the exit preamps guitar amplifier recommend using qualitative nizkoemkostnye cords minimum length.
In SS-20 used the original cabinet emulator. First, Modeling amplitude-frequency characteristics of acoustic guitar system, secondly, imitating his own head nonlinear dynamic characteristic instrumental loudspeakers that additional colours output signal near harmonics, making it "alive" and closer to reality.
In fact there was because that is not used Operational amplifiers and repeaters at PT, which just complement signal 2 - th and 3 - y harmonics, with a smooth increase their level while increasing the level of the signal (it is actually similar to instrumental in the head Locked Cabinet)
