Boost Pedals
Two Knob Treble Booster
Each 2 Knob Treble Booster features:
Dallas Rangemaster circuit modified with a 6 position tone switch
AC107 or OC44 (when available) germanium transistors
Vintage CTS, Centralab, Piher or Stackpole potentiometer
Philips or Sprague electrolytic capacitors
6 position rotary input capacitor switch with paper in oil or mylar audio grade capacitors
1960's Sprague Black Beauty or Bumblebee (when available) output capacitors
Allen-Bradley 1/2w, 1w & 2w carbon comp resistors
True Bypass switch
Handwired on phenolic terminal strip
Daka-Ware control knobs
Hammond 125b enclosure in hammered finish
Treble Booster Professional
The Treble Booster Professional features my favorite modifications to the Rangemaster circuit. These include larger output cap value for wider frequency range & increased potentiometer value matched with higher gain transistor for "hotter" voicing.
Each Treble Booster Pro features:
Modified Dallas Rangemaster circuit modified with a 6 position tone switch
Mullard OC45 germanium transistor or Mullard OC202 silicon transistor
Vintage CTS, Centralab, Piher or Stackpole potentiometer
Philips or Sprague electrolytic capacitors
6 position rotary input capacitor switch with paper in oil or mylar audio grade capacitors
NOS West-Cap, Astron or other PIO output capacitor
Piher & Allen-Bradley 1/2w, 1w & 2w carbon comp resistors
True Bypass switch
LED on/off indicator
Handwired on phenolic terminal strip
Daka-Ware control knobs
Hammond 125b enclosure in hammered finish
Pre-Amp
This germanium Pre-Amp boost is a reproduction of a rare 1950's Hofner Preamp unit. It was designed to be used in the auxiliary input of the typical 1950's home's stereo hifi console or tape recorder (all which would be vacuum tube based) and allow a guitar to be plugged in and amplified. Effectively making your home radio into a guitar amplifier. The only modifications to the circuit are a volume control and to remove the shock protection capacitor. That capacitor was in place to eliminate the possibility of being shocked by a "hot chassis" radio. In pedal form it is not needed, so we bypassed that section. the Volume control allows you to dial in the amount of boost this circuit provides.
As a pedal this circuit is a fantastic clean or dirty boost. Into a clean amp and lower volumes, it is a germanium loud button! It just takes your signal and makes it quite a bit louder and sweeter. Into a dirty amp, it pushes the signal into further overdrive. With the volume control ay max into a dirty amp, it sounds like a vintage tweed amp on the verge of imploding into itself.
Each Pre-Amp features
Point-to-point thru-hole construction
Vintage 1960's Philips AC107 transistor
Vintage CTS, Stackpole, Clarostat potentiometer
NOS Philips electrolytic capacitors
1960's Wima TFF capacitor
NOS Allen-Bradley carbon comp resistors
Housed in a hammertone gray 125b enclosure with Fairchild reproduction knob and dial plate
Amptop Treble Booster
Each Amptop Treble Booster features:
AC107 or OC44 (when available) germanium transistors
Vintage CTS, Centralab or Stackpole potentiometer
Philips or Sprague electrolytic capacitors
6 position rotary input capacitor switch with paper in oil or mylar audio grade capacitors
1960's Sprague Black Beauty or Bumblebee (when available) output capacitors
Allen-Bradley 1/2w, 1w & 2w carbon comp resistors
True Bypass switch
Handwired on phenolic terminal strip
Daka-Ware control knobs
One Knob Treble Booster
Each One Knob Treble Booster features:
True to original Dallas Rangemaster circuit
AC107 germanium transistors
Vintage CTS, Centralab, Piher or Stackpole potentiometer
Philips or Sprague electrolytic capacitors
1960's Sprague Black Beauty or Bumblebee (when available) input capacitor
1960's Sprague Black Beauty or Bumblebee (when available) output capacitor
Allen-Bradley 1/2w, 1w & 2w carbon comp resistors
True Bypass switch
Handwired on phenolic terminal strip
Daka-Ware control knobs
Hammond 125b enclosure in Blue, Chrome or Raw Aluminum
**No Longer Available**
Replica Series R2RGeMaster
Limited run of 49 total units - *SOLD OUT*
The R2R Replica Series are a part for part build of an original Dallas Rangemaster. Each component is an identical to what was used to build the Rangemaster in the 1960's. These Replica units are as close to an original as possible.
Each Replica features -
1960's UK made Mullard OC44 black glass germanium transistor
**1960's UK Mullard OC71 transistor also available by request**
1960's Egen or Welwyn "Pre-Set" bakelite wirewound or carbon potentiometer
1960's Plessey, Hunts or other UK made 50uf capacitors
1960's Hunts, Erie or Aerovox mouldseal input and output capacitors
1960's Erie type 108 & type 109 carbon ceramic resistors
1960's Philips (Holland) solid core wire
Handwired on phenolic terminal strip
R2RGeMaster
Additional Info
*Due to the design of this vintage Treble Booster circuit, these pedals work best placed first in your signal chain. These units do not work well with buffers or buffered bypass pedals going into the input of the booster. This will cause the boost to sound thin with a significant volume drop*
**These effects can be powered by 9v battery (included) or with a standard Boss/One Spot style negative center 9v power supply**
***Please note that these pedals will not work in a power daisy chain with other pedals that use a negative center power supply. It will need its own isolated power source, either it’s own separate power adapter or it works well with a Voodoo Labs or similar power brick***
If you have any questions or need assistance, please contact: info@r2relectric.com
Each R2RGeMaster features:
Dallas Rangemaster circuit modified with "Range" control
AC107 or OC44 (when available) germanium transistors
Vintage CTS, Centralab, Piher or Stackpole potentiometers
Philips or Sprague electrolytic capacitors
1960's Sprague Black Beauty or Bumblebee (when available) input capacitors
1960's Sprague Black Beauty or Bumblebee (when available) output capacitors
Allen-Bradley 1/2w, 1w & 2w carbon comp resistors
True Bypass switch
Handwired on phenolic terminal strip
Vintage Daka-Ware control knobs
Hammond 125b enclosure in Matte Black finish