Features
Brand new from AMT Electronics, the amazing new SS-20 Guitar
Preamp. Incredible Clean, Overdrive, Distortion, and Lead tones in a compact
tube valve driven pedal. We are raising the bar and technology in modern day
pedal design and offer affordable high end guitar tone pedals. This one is going
to be finding its way onto lots of pedalboards! Our principle and motto for this
device is it is the VALVE that sounds and sings, however, the transistors do
their best to help it sound in all its beauty and originality.
The
Features of SS-20:
- High-grade high-voltage feed of triodes.
- Complete
elimination of operational amplifiers traditionally used in hybrid preamps for
sound amplification and processing.
- Application of special semi-conductor
amplifiers modeling triode-based harmonics and providing signal amplitude
necessary for high-grade valve operation.
In order to achieve the full
opening of input valve cascades working in the "hottest" conditions the giant
amplitude of one hundred and more volts is necessary. The dynamic properties
characteristic to valve – based preamps are implemented in SS-20 due to the
elimination of signal limiting OA (feed level of 20-25V) in the part of
preliminary amplification and using special cascades capable of reaching 250V
amplitude with nonlinearity similar to 12??7 triode. Thus, we managed to achieve
full dynamic characteristics of guitar signal without usual hybrid "squeeze" as
well as assign special sound character to SS-20.
Special attention was
also paid to clean channel – in this section we also followed the way of
preserving the dynamics of guitar signal with simultaneous formation of soft
"nonlinearity" inherent in the cascades on vacuum triodes. It also allowed us to
escape both the "squeeze" and "refinement" peculiar to many clean-channels of
hybrid devices.
The architecture of SS-20:
–Ttwo high-grade channels
CLEAN and DRIVE with the possibility of Drive-channel operation in two basic
modes: moderate sensitivity (CRUNCH) and high sensitivity (LEAD).
– Effects
Loop Send and Return.
– Operation via both direct unaltered signal for guitar
amplifiers heads, combos, and speakers (OUTPUT jack) as well as speaker cabinet
compensated output for mixing consoles, computers, or other recording devices.
The basis of the inner preamp structure is the principle of maximum use
of amplification and nonlinear transformation of the valve part of the device.
Thus, the semi-conductor part of the hybrid practically does not participate in
the sound limitation (except for the use of preamp in LEAD mode at Gain LEAD
level of higher than 7) and the entire spectrum is formed by the valve preamp
part. In the preamp stage the quantity of semi-conductor cascades is not used in
the sound processing, and in the absence of jacks in SEND and RETURN the signal
is forwarded to OUTPUT through compensating circuits directly from the output
triode cascade. Therefore it is advised to use high quality minimum length
cables for connecting the preamp output with guitar amplifier input.
The
SS-20 uses the original cabinet emulator, however, ONLY in direct out mode! It
models the amplitude-frequency characteristics of guitar amplification systems
for the most accurate reproduction and ease of recording direct. Secondly, it
simulates own nonlinearity of dynamic head peculiar to instrumental
loudspeakers, that in its turn colors the output signal with short-range
harmonics making it live and closer to real. Our unique speaker emulator
circuitry supplements the signal with 2nd and 3rd harmonic with smooth increase
in their level at signal level growth (it actually is similar to instrumental
head in the closed cabinet), not found on other manufacturers pedals.
Technical Information:
Power: External
Adaptor AC 120V 12V DC .8A (included) Tubes: 1 x 12AX7 Incandescence - 12.6V
(6.3V)
Anode Voltage: DC 290V
Jacks: Amplifier Output - for Combo
Connection
Mixer Output - for Mixer/Recorder Connection
Effects Loop Send and Return
Input In
Bypass: Left F Switch -
DRIVE effect on/off
Right F Switch - DISTORTION effect on/off
Demo Clips:
http://www.amtelectronicsusa.com/amtelectronicsusa_ss20_demo_1.mp3 http://www.amtelectronicsusa.com/amtelectronicsusa_ss20_demo_2.mp3
http://www.amtelectronicsusa.com/amtelectronicsusa_ss20_demo_3.mp3
|
