Rhodium Electronics

Valve-Preamp

Boutique Scratchcaster Volume Gain x2 up x10 Guitar Adequate Signal Preamp Ralph Denyer

This guitar preamplifier multiply from x2 up to x10 the Volume and adequate the amplitude of your guitar pickups signal, it circuit is based on the Guitar Handbook” circuit by Ralph Denyer, Isaac Guillory and Alastair M. Crawford. Guitar Preamp x2 up to x10 gain volume circuit based in an Operational Amplifier. 





SCRATCHCASTER ELECTRIC GUITAR PRE-AMP INCREASE x2 up to x10 TIMES INPUT SIGNAL AMP




+1 Vpp OUTPUT SIGNAL AMPLITUDE PRE-AMP comparable to high standard pickups features (EMG, DIMARZIO, TEXAS...)
VOLUME CONTROL


INCREASE ADEQUATELY YOUR GUITAR PICKUPS UP TO 10 TIMES IT OUTPUT



POSITION SWITCH x2 INPUT PRE AMP -- TRUE BYPASS


Boutique Tube Boost Overdrive Guitar Valvecaster Effect Preamp NOSMullard Tube

Exclusive Valvecaster Boutique Tube Boost & Overdrive. Guitar Effect Preamp Gain-Tone-Volume. 

High quality components tough to military standard with Mullard 12AU7 tube ecc82 assembly. NOS Mullard valve ecc82 in original box. 


Unique Volume, tone and gain tube overdrive effect Preamp design. Built in aluminium stompbox. Dimension 120 x 90 x 90 mm3.


Hand built Booster Overdrive preamplifier built in electronic printed PCB board. Standard Power Supply to +9Vdc or +12Vdc. 



Exclusive Valvecaster models, unique designs based on ecc82 Mullard vacuum valve and other tubes. New Old Stock Mullard valves in original box. 


Workbench Oscilloscope Testing New Valvecaster Mod 1N4548 Clip Diodes FX

The New Valvecaster Mullard ecc82 Tube Boost Overdrive Mod Revision in the oscilloscope at Rhodium Electronics. Tested in workbench and amplifier. 

Unique Boutique Valvecaster Mullard ecc82 Tube Boost Overdrive Mod Guitar Preamp. Exclusive Boutique Effect Modified Tube Boost Overdrive Preamp based on 12AU7 Mullard valves. Include New Old Stock Mullard valve tube in original box.


Sinusoidal Input Signal 400 Hz; Vp = 0,2 Volts


This valve preamp is unique and original, designed by an experienced electronics engineer, working together with sound engineers and guitarists, achieving excellent quality preamplifier circuits.

Exclusive and unique modification of the Valvecaster Tube Boost Overdrive circuit, hand built effects preamp in aluminium guitar stompbox. Dimension 120 x 90 x 85 mm3.

Max Output Overdrive Valvecaster with Low Input Signal Selector. A Mullard valve-tube ecc82 circuit with high quality components, hand built electronics PCB board, this circuit is designed tough to military / audiophiles standard components. NOS Mullard 12AU7 valve ecc82 in original box. 


This modded Valvecaster guitar gear includes a 5 ways Input Impedance Selector and single toggle control switch for activating clipping diodes effect at the output stage of the valve preamp.

Standard Power Supply to +9Vdc.  

Selecting Input Channel to High Input Impedance.

Max Output Overdrive Valvecaster High Input Impedance.


Excellent Vintage British Mullard valves, warm sound and effect modulation. Fully tested in workbench and studio, using both valve and solid stage amplifiers. Guitar Tube preamp in excellent working order, as brand new hand built boutique guitar gear.

Selecting Input Channel to Low Input Impedance Selector, setting Vintage diodes 1N4148, filter switch for Tubescreamer Output Clipping Effect.

Lifetime warranty includes fixings / updates of components and PCB circuit board. Rhodium Electronics provides technical support, free quotes for upgrades and mods. More info at Valvecaster.co.uk and Rhodium Electronics.

If you remember this, then you'll like this. It's like having a whole other amplifier in your rig, getting a warmed guitar sound, and a new range of harmonics and warm valve sound when combining with classic amplifiers and FX pedals. 

Max Output Valvecaster for Low Impedance Input Selector and clipping diodes FX. 


Input Channel Selector to High Input Impedance and Vintage diodes 1N4548 FX,
Filter Switch for Tubescreamer Output Clipping FX.

Max Output Valvecaster for High Impedance Input Selector and clipping diodes FX.  


This New Valvecaster have been tested in workbench oscilloscope and records studios, getting a suitable performance of your guitar with adequate valve guitar sound. Probably, the best pure overdrive ever. Boost Valvecaster with your classic FX pedals, like having a new amplifier in the rig.

Exclusive Hand Built Guitar Effects in the London Borough of Camden. 

Boutique hand crafted tube boost and overdrive guitar preamps under customer estimates, custom guitar effects, pre-order projects and very responsive technical support

Valvecaster Mod going to Guelph, Canada Great for Bass w/Mullard ecc82 Blackburn

On last 05/09/2017 the New Valvecaster Mod Tube Boost Overdrive was sold out in our shop in the website 
https://reverb.com/shop/rhodium-electronics 
Valvecaster will have a first feedback for bass guitar, in fact, it is suitable for electric bass and active bass preamp circuits. 



Southampton Pedals from Canada asked about Valvecaster for bass guitar. Indeed, we tried Valvecaster Tube Boost Overdrive for bass guitars a time ago, therefore, the New Valvecaster Mod provides an input selector for input impedances. It makes Valvecaster Mod suitable for passive and active bass, this Input Impedance Selector will cut low frequencies, if required to prevent side effects of too much low end in the end stage of the tube. Also, Valvecaster Mod enphatizes the bass frequencias even more. 


The Clip switch allows a clipping diodes effect, getting compression and Fuzz tone.


Valvecaster Mod is sold with Lifetime Warranty, covering any failure, service or technical attention required. Rhodium Electronics would upgrade the circuit corresponding to their last PCB electronics board version for Valvecaster and Valvecaster Mod.



Robert Jessome will receive it soon, as pictured at the beggining of this post, Valvecaster going to Guelph, Canada. It was sold on last 05/09/2017 and dispatched on 07/09/2017. After testing and troubleshooting this prototype breadbroard version of Valvecaster with their corresponding NOS Vintage Mullard ecc82 12AU7 in excellent condition and original box.

Recording Valvecaster Tube Boost Overdrive Mullard ecc82 preamp Demo at Roslon Media Studios

What such a great time at Roslon Media studios, w/ bassist Adrian Litrolibur from Negacy and music producer Luke Hanlon, demoing and reviewing our new Pro Mod for Valvecaster.

Probably, the best Pure Tube Overdrive ever, now for passive and active, guitars and basses pickups circuits.




During the recording of our demo at Roslon Media, sharing opinions, Adrian left us very good impressions about the bigger features of this unique Valvecaster for electric bass, having a great experience. Finally, Adrian left us known their feedback in our facebook pages.



<<This pedal Is so amazing the input Impedance Selector can cut low frequencies if required to prevent the side effects of too much low end in the end stage of the tube. Also, Valvecaster enphatizes the bass frequencies even more, and the clipping diodes allow to get compression and fuzz tone...perfect pedal for live and studio too, great tone and punch>>


Guitar Pedal Demo Boutique Valvecaster Tube Boost &amp; Overdrive Guitar Preamp Mullard ecc82 Part iii




Guitar Pedal Demo for Boutique Valvecaster Tube Boost & Overdrive Guitar Preamp. Demo and sketches of a unique piece performancing in high overdrive gain knob positioning and messing  around with tone knob and bridge and neck pickups.
Exclusive Boutique Effect Preamp Gain-Tone-Volume based on 12AU7 valves. Unique Valvecaster model based on vintage ecc82 Mullard vacuum valve tube. Include New Old Stock Mullard valve tube in original box.
If you remember this, then you'll like this. It's like having a whole other amplifier in your rig, getting a warmed valve sound, and a new full range of harmonics, tones and colours when combining with classic amplifiers and FX pedals. 
This valve preamp is unique and original design by an experienced audio and electronics engineer, based in London. A Mullard valve-tube ecc82 combined with high quality military standard and audio grade components in an original handcrafted and unique PCB circuit board, this circuit is designed tough to military standard, with three main control potentiometers (Volume, Tone and Overdrive) with Audio Grade Capacitors, Mullard Mustard and Tropical Fish and Bakelite Roederstein capacitors, HOLCO British Military resistors and Japan TOCOS potentiometers.
Exclusive and unique Tube Boost Overdrive hand crafted effects preamp designed in aluminium guitar stompbox. Dimension 120 x 90 x 85 mm3. Standard Power Supply to +9Vdc and +12Vdc. 
Excellent Old British Mullard valve, warm sound and effect modulation. Fully tested in workbench and studio, using both valve and solid stage amplifiers. Guitar Tube preamp in excellent working order, as brand new hand built boutique guitar gear.
High quality Tube Boost and Overdrive Valvecaster Effect Preamp. Lifetime warranty and technical support.

Valvecaster and Scratchcaster Guitar Pedal Demo - Tube Boost Overdrive and Injection Pickups Booster


Guitar Pedal Demo for Boutique Valvecaster Tube Boost & Overdrive Mullard ecc82 Guitar Preamp and Scracthcaster Injection Pickups Booster, wich increase volume of guitar pickups and overdrives the input of this Tube Boost Overdrive, getting a superoverdrive at ouput of the valve preamp. 
Demo and sketches of a unique pieces performancing in low voltage, messing around with the gain knobs positioning and tone knob and pickups set up.

  

RHODIUM ELECTRONICS
Camden Town 
NW1
London 
pedals@rhodiumelectronics.co.uk