Q. I Already Own a Fender Princeton Reverb -or- Fender Blues Junior -or- Marshall C5 -or- VOX AC4TV (Standard or C1) Amp, Can you Modify it for me?

A. Yes, Not a Problem. Email me for a Quote.

 

Q. Is 'OPR' (Output Power Reduction) Really any Good?

A. I have tried all of the Alternatives, they all work to some degree but 'OPR' (Power Scaling) is The Business, It works Brilliantly and is Extremely Reliable. Almost all Valve Amps Sound Great when they are 'Cranked', but how often can you Crank your Amp without somebody complaining - 'It's Too LOUD!!' - With 'OPR' you can Crank your Amp every time you use it - Then just turn the 'OPR' Control Down to an Acceptable Volume - The Tone will stay the same. 'OPR' is the BEST and nothing else can touch it.

 

Q. What about Valve Rectifiers?

A. Yes, A Fantastic Sounding Modification to any Valve Amp. All Amplifiers use a Rectifier to convert the Raw AC Voltage from the Mains Transformer into DC Voltage. The Amp Circuits Need DC Voltage to work. If, for example, you Hit a Power Chord on your Guitar, the Amplifier Circuitry Suddenly Demands a Large Dose of Power from the Mains Transformer. Silicon Diodes are Extremely Efficient and can convert the Raw AC into DC almost instantaneously - to Feed the Amplifiers Needs. Valve Rectifiers are a Different Story. Generally Speaking, they can't Cope with Sudden High Demands of Energy and they 'Starve' the Amp of Power until they can catch up with the Demand - This is Called 'SAG' - and it Sounds GREAT!  The typical sound Produced by an Amp using Silicon Diodes would be -

Attack-Sustain-Release-Decay.

Using a Valve Rectifier, the sound would be Closer to -

Attack-Swell-Extended Sustain-Release-Decay.

In Most Cases, A ‘Dual-Rectifier’ Switch can be added to the Amp so that you can select between ‘Silicon’ or ‘Valve’ Rectifier. For Me, You Can’t beat the 'Feel' of a 'Valve Rectifier'.

 

Q. What about Speakers?

A. This is down to personal taste - You can have any Speaker you want.

 

Q. What about the Output Transformer?

A. The Output Transformer is perhaps the Most important part of any Valve Amplifier. It converts the High Impedance, High Voltage 'Valve' Output - to -  the Low Impedance, Low Voltage 'Speaker' Output. The Better the Output Transformer, the Better the Sound (Usually).

 

Q. What about the Valves?

A. I have a ‘High-Gain’ Test Station in which all Valves that I use are tested. Any Valves that are Mechanically ‘Noisy’ or ‘Microphonic’ are Rejected and Replaced with Known Good Valves. Today's Standard of Valve Manufacturing is Poor and it is quite a Task to acquire ‘Quiet’ Valves. For me, it is more important that the Valve is working Correctly and is ‘Quiet’ than any other Factor.  In the Past, I have Rejected up to 30 Valves in order to find just 1 that works to my satisfaction

 

Q. What about 'Dual Output Valves'?

A. The Final Sound of any Valve Amplifier is Determined by many Factors but one of the Major Players in the Circuit is the Type of Output Valve Fitted. An 'EL84' sounds totally different to a '6L6GC'. Some of the RAT Amps are fitted with 2 Different Output Valves and you can 'Switch Between' them -or- 'MIX' them -or- Have them Both Running all of the Time (Dual Parallel). It all adds up to a Much more Versatile Amp and Something a Bit different to the Standard, Run-of-the-Mill - 'Valve Amp'.