Butler Audio Car Audio - Manual (Page 2)

Building upon the success of the original Tube Driver
series, BK Butler , a 25-year veteran of the
professional music industry, knew it was
possible to bring all the excitement of
“live stage” and the superior qualities
of “recording studio sound” to the car
audio market. Virtually all recording artists and
sound engineers recognize the inherent superiority of vacuum tube equipment for
recording, live sound reinforcement and musical production. Now, the
ultimate mobile tube-based amplifier is a reality:
ZERO NEGATIVE FEEDBACK, OPEN-ENDED DESIGN
With authentic Vacuum Tube response and an open-ended design, (ZERO
global negative feedback), Tube Driver
BLUE overcomes one of the most
universally agreed-upon sonic problems plaguing virtually all current amplifier
designs. Harsh degenerative feedback causes a plethora of undesirable
sonic products. Tube Driver
BLUE eliminates global negative
feedback entirely! Coupled with a totally unique
output load mirroring circuit, the hand-
selected 6SL7GT dual triode tubes operate
in a safe, near plate-saturated mode
continuously. This design creates the ideal
electrical environment for classic vacuum
tube thermionic characteristics.
Tube Driver B L U E
Tube Driver BLUE amplifiers utilize
natural vacuum tube thermionic emissions
to automatically enhance biasing of the
audiophile-quality Sanken bi-polar devices
used in every model. This unique USA
patented design reduces both Crossover and
Total Harmonic Distortion (THD) figures to LESS
than 0.15%. This achievement is almost unheard of in an open-ended, ZERO
negative feedback high fidelity amplifier. Conventional open-ended/low feedback
vacuum tube amplifiers often exhibit real world THD of 2% or greater and are
generally limited to quite low output power. Tube Driver
BLUE succeeds
in operating at 10 times less THD while maintaining real power vacuum tube
tonality! Now you can hear the original pure essence of vacuum tube audio with
Tube Driver
BLUE .
DESIGN/PROTECTION FEATURES
All this performance must be effectively controlled. The exceptional electrical
design of the Tube Driver
BLUE , coupled with a MASSIVE aluminum heat
exchanger/heat sink, provides protection and cooling capacity far in excess
of any contemplated needs. A long life, temperature-controlled cooling fan is
activated if the surface temperature exceeds 50o C.,
keeping heat stress well within safety levels.
Additionally, DC fault protection with soft-
start (10-15 sec.) and a fully regulated DC
tube-heater supply circuit protect your
Tube Driver
BLUE amplifiers in
every conceivable way.