For all other Groove Tube inquires relating to amplifiers, microphones etc., please call Fender Consumer Relations at 480-596-7195 or send an email to: consumerrelations@fender.com.

Click on the vacuum tube to be redirected to Aspen Pittman's letter in regard to the GT-Fender announcement. 

For the Fender press release CLICK HERE

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You have to experience its awesome sound, based on the variable transconductance tube design that was used in legendary compressors. Glory Comp is so good... it's almost un-Fair!

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Our award winning all tube mic preamp. Five unique and meaningful features that no other preamp offers. Eight-tubes, fully-differential (balanced) signal path with 75dB total gain via precision 1dB and 5dB stepped attenuators, four variable transformer impendances PLUS two balanced-bridged inputs, five variable rise-time settings, precise VU meter with five viewing options, separate +4dB and -10dB transformer outputs, microphone and +4dB line level balanced inputs. Separate instrument input with two options for input sensitivity.

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The SuPRE is a two-channel stereo microphone and instrument preamplifier that uses a high resolution tube signal path for legendary Groove Tubes tone and response. Like the ViPRE, it features variable transformer impedance settings on each channel (300/600/1200 ohms), with 4 high quality Nickel core input and output transformers. The SuPRE provides a hefty 72dB of gain on each channel, using 4 specially selected GT pentode/triode dual element vacuum tubes (2xGT6922 dual triodes and 2x GT6CH8 pentode/triode tubes).

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Understanding the GT Tube Performance Rating System

Many folks who buy our tubes know that we use a special process to categorically rate our tubes so that players can select the tubes that best fit their preferred tones and styles. However, we get a lot of
questions about our rating system, and what the numbers actually mean.

IMPORTANT BIAS NOTE: If you're replacing a tube with the SAME TYPE of Groove Tube (tube model and rating), you do not have to rebias your amp. In any other case, you should always have a qualified amp tech reset your amp’s bias whenever changing your tube type or rating number. Contact Groove Tubes if you have questions about which tube will work for your amplifier, or whether re-biasing is required.

Click on the chart at the right for a much more detailed explanation.

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Click on the picture for the full size version

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GrooveTubes now has a Myspace page. Feel free to send us a friend add request. 

Once you are on our friends list you will have one more place to ask us questions.  You can still send your questions to the sales or techsupport email addresses below. 

On the GT myspace page you can post comments with graphics, videos, your show schedule or record release information or just say hello.

Just click on the GT logo or go to your own myspace page and type in the username "gtelectronics"

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