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- tube-buffered
input and 'send'
- tube
mixing stage using virtual-earth mixer
- 'send'
and 'return' level controls
- 'send'
and 'return' jacks
- 'series/parallel'
switch
- local
decoupling included
- operates
from 160-450Vdc 2mA plus 6V 300mA
- eyelet-card
layout included
This
is a kit form of the "Best All-Tube Effects Loop" from
TUT, offering series
or parallel operation, 'send' and 'return' level controls
and jacks, and transparent mixing. The 'send' is buffered,
eliminating problems with long cables to your effects.
The return input has enough gain to support pedals used
in the loop even if the loop is inserted in a high-level
signal point in your system. Everything is quiet enough
that the loop can be used at the front end of your guitar
rig, too. Any 12A_7 can be used. Circuit-card (eyelet
board) layouts are included for both internal and external
tube mounting.
The
BFX can be used with the ERK
to be a switchable loop, or as a switched-gain boost,
following the guidelines in TUT5.
The BFX + ERK can be used as a stand-alone
effects controller powered from a 13VA
supply.
Typical
system location for the BFX effects loop would
be between the GPK Guitar Preamp
Kit and the power amplifier. If reverb is incorporated,
then the BFX should precede the reverb.
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