Rodenberg / GAS-728 Overdrive / Effect
Special features:
* Drive- Tone and Level controls are moved to the top
*Added switch for more gain on GAS-808 (GAS-909)
*Added 'Bolt/Serial'-switch for two different working modes
*Added 'GO!' switch for momentary
*switching mode of the second GAS
*Illuminated rocker switches when switched to 'ON'
*Specially dimensioned and selected components = overdrive at its best!
*True Bypass with less switching noise
*'Long-Life'-foot switch
*Upside blending of lasered high-grade steel
*Extremely bright green and blue Jewel-LEDs
*Power supply by external AC/DC-adapter
*Handmade in small series
*2 years warranty
New features:
*All Words (Tone, Drive, Level, Bass, Bolt....) are lasered in the stainless *
steel panel on the top of the unit.
*The Drive- and Tone Controls are moved to the top.
*The Signal Path goes first through the 707 (green) and then through the *808 (blue) which is switchible to the 909 mode.
*The 9V DC jack has moved to the rear of the unit.
*The GAS-808 (blue) can be switched over to Momentary Switching (GO!).
*All five Rocker Switches on the front panel have an Integrated LED Light *when switched 'ON'
Special features:
Looking inside the GAS-728 you will find one GAS-707 Clean Boost and one GAS-808 Overdrive pedal put together in the same case, connected serial. The 707(green) has the Tone- and Level controls, the 808 Tone-, Drive
and Level controls on the top panel. Both pedals have their own Bass-Boost switches. The second in line can be switched over into a 909 Mode which features more gain. Besides that the GAS-728 has been given an extra switch for Bolt or Serial using mode. Also new is the GO! Rocker Switch for Momentary Using Mode.
Finally the new GAS-728 includes a True Bypass switching system, with less switching noise!
GO! Rocker Switch: (Front Panel)
When switched to 'ON' the GAS-808 (blue) runs in GO! Mode.
The GO! Rocker Switch activates the 808 (blue) to momentary mode.
The GAS-808 (blue) is activated by stepping on the footswitch and keeping it pressed, and returns to the previous setting by letting go again.
The GO! Mode changes the second footswitch (GAS-808 blue) to a Momentary Switch for single notes or little Fill Ins - only active when stepped on!
In Serial Mode the GAS-808 (blue) is switched in series to the actual setting, in Bolt Mode it will switch off the previous sound setting and activate the GAS-808 (blue).
Bolt Rocker Switch: (Front Panel)
When switched to 'ON' the pedal runs in Bolt Mode.
Bolt-Mode:
The Advantage: Switching from GAS 1 to GAS 2 is only one footstep away, without having to disactivate GAS 1. It shuts off automatically. Same way around when going from GAS 2 to GAS 1.
Both GAS can be run at once without getting across each other. This way both GAS can be run Serial.
Sound:
Bass Boost Switches:
When switched to 'ON' the pedal runs in Bass Boost Mode.
Both GAS pedals have their own Bass Boost Switch to push the lower frequencies. The switch for the 707 (green) is located on the right side,
the switch for the 808 (blue) is located on the left side.
909 Rocker Switch - More Gain:
When switched to 'ON' the GAS-808 (blue) runs in 909-Mode.
The GAS-808 (blue) can be switched over into GAS-909-Mode which features more gain.
You will find the Input Jack righthandside and the Output Jack lefthandside the GAS-728.
On the rear of the pedal you can find the Jack for an external power supply. Its a standard jack (2,1mm). You can use the usual adapters for floor effects (9V DC,+ = outside ring, ground = inside).
Please use a high quality power supply - stabilized only!
Technical Data:
*Input Level: -20dB
*Input Impedance: 1MOhm
*Output Impedance: 10 KOhm
*Dimensions (L/T/H (inch)):
4.7 x 3.7 x 1.3
*Weight: 1.1 lbs
*Polarity: + = outside ring, ground = inside
RODENBERG amplification, Germany 
Hello,
this is Ulrich Rodenberg,let me tell you something about me, my work and products.
At the age of 13 I began to play guitar and used several old tube radios as an amplifier, this
sounded great (lol). Three years later at the age of 16, after 5 weeks of holiday work, I bought my first JCM 800 in 1984. Although it was and for sure is one of the best amplifier they made, the flexibility was very small for me. Because I had some experience in electronic, in fact I loved it, I built in a second master control switchible by stage board. The second step was to built in the circuit board of the real TS-808 for more gain. I played this modified amplifier two years in my band before I began to study how tube amplifiers really work. The very end was that my JCM was divided in pieces, the chassis and the top was gone to waste - how strange!
I used the transformers, choke, caps to build my first main amplifier in 3 rack space. I had just finished my high school exam in electronics and after 3 years more I finished my education as an electrical engineer.
In 1991 I started up my own business building several Pre- and Main Amplifiers, Heads, Combos and did repair jobs and modifications of everything a guitar player can use. In that time my second job was to
develop medical technologie circuits where I learned to work with microcontrollers and IC's - hard and software.
In 1996-98 I introduced my All Tube Guitar Head, with Motor Driven Pots, 200Watts, fully programmable which was called 'The Most Special Amp' at
Frankfurt Fair! After a 5 year break in building amplifiers I went back to business in 2001 to put my experience of the last years into a new amplifier series. During that time in 2005 a friend asked me to build a real good sounding overdrive pedal and it won't take long the whole GAS-Overdrive
family was developed. The top was when Lee Ritenour stumpeled into the GAS pedals and asked me to build the Official Lee Ritenour LR-GAS. I had designed and built this pedal within only 3 weeks and the LR-GAS was ready to use it on Lee's Asia tour in Nov. 2006
All the time I worked on my new amplifier series too, but the main change in my amp design was to built up amplifiers which uses only vacuum tubes in the signal path, no IC's or something else but IC's and microcontroller only for the internal switching system and Midi. In December 2006 I finished this amplifier series which features 5 completely seperate channels with 22 vacuum tubes - really strange.
For those who do not like Big Heads I developed a smaller 3 channel guitar head with 16 vacuum tubes, in fact this is as big as the biggest amps on the market - I cannot do it smaller (lol).
Today, at the age of 41, I can say these are the most flexible and best sounding amplifiers I've ever made! - more to follow...
Ulrich Rodenberg
