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Conference napalm::guitar

Title:GUITARnotes - Where Every Note has Emotion
Notice:Discussion of the finer stringed instruments
Moderator:KDX200::COOPER
Created:Thu Aug 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3280
Total number of notes:61432

2194.0. "Digitech Twin Tube preamp" by CSC32::M_VEGA () Tue May 07 1991 18:25

Has anyone heard of/tried out Digitech's Twin Tube preamp? Comments good/bad?

2 12ax7 tubes
20 to 15k response
90db sn
6 effects at same time
fx: up to 500ms delay, chorus, flange, 7 band graphic eq, 
    compression, noise gate, speaker simulator, mix,
    clean tube, dirty tube, solid state
Midi programmable
60 preset memory locations
60 user definable
120 total memory locations
Foot switch or midi controlable
Aplha title and channel no# display
Mono in, Stereo outs
FX send and recieve


Mark
    
T.RTitleUserPersonal
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2194.1biasedCSC32::M_VEGAFri May 10 1991 20:5156
Picked up a Twin Tube the other day so here's some biased impressions:

This preamp is very quiet. Ubiquitous Digitech front pannel with 
programming interface similar to the DSP 128/256. Accepts midi footswitch
controller. The mix knob on the front is replaced with a second mono
input jack which disables the back input jack when in use.

Nits:
I think the front input/output/mix knobs are great for fine tunning on 
the spot without having to go into the programming menu, so I miss the 
mix knob (I have yet to be ON THE SPOT where I might really need this).

The input gain knob turns into a subtle saturation/tone like control
when both tube gain and saturation are cranked up (10-11). In this state
the actual input gain remains just under the red. Normally I set the input
knob and forget about it, so I'm not sure how serious this is. I've tested 
this on other units with same result.

The tube/w signal output gain menu is on the other side of the EQ section 
to the tube gain/saturation menues. Currently I'll set an EQ I like and then 
adjust tube charactistics for gradiated sound values which means sliding 
across the 7 EQ adjustments to balance out overall gain. A bit of a pain if 
you want to create presets from cream to crunch on a specific EQ curve.

The feedback FX adjustment value (chorus, flang, delay) seems a bit coarse
(10 step intervals to 100), but the mix and level menues allow for 
compensation. I don't have a gripe about the FX sound (sounds as good as 
any other digital device), just the value granularity for feedback control. 
This has not been a problem so far.

Only liked a few of the 60 presets.

Pro:
Sounds Great! After finding THE EQ setting, was able to build 15 clean
tube patches in a couple of hours on that EQ curve that cry out for 
tunes from various music genera. From a nice warm creamy tone ala mellow 
Jimmy Page to raw and crunchy. I'm having trouble starting work on distorted
tube and solid state programming because every time I power up the Twin Tube 
I just can't pass up sampling those clean tube settings. Haven't had a chance 
to play with the midi interface yet but the foot switch is on the way. At
this time I've disabled the digital FX mode since I already have an FX box. 
I plan to go back and create a second bank of favorites and add in 
appropriate delay...should I ever be ON THE SPOT and my main FX box dies.
The Twin T also features speaker simulator mode, again haven't tried this
mode, but will get back when I do.

Haven't done an A/B comparison against boxes like the MP1, Gallien K...
but for a midi programmable preamp, the price was hard to beat.

I've played around with various dist/fuzz boxes for some years and have never
been satisfied with the results as I've been over the past few days using
this preamp. 

Mark
    
2194.210 to 15CSC32::M_VEGASat May 11 1991 13:144
    
    Correction to .1
    
    The feedback granularity increment is 15, not 10.
2194.3MRPIT - Midi Rack Puke In Training ??GSRC::COOPEROpinionated MIDI Rack PukeMon May 13 1991 12:176
    Sounds great Mark !  Congrats on the new toy, and welcome to the MIDI
    club...  :)
    
    Can't wait to hear it.
    
    jc