A question I hear a lot. Do I need to have my Valve amplifier biased? So What is Bias. Well to put it simply the bias of a Valve amp is set by adjusting the grid voltages to set the idle current of the...
Guitar Multi FX – Friend or Foe? by Tony Williams Killer Guitar Sounds? Maybe... Guitar multi FX units are undoubtedly one of the best value-for-money tools available to today's guitar player. Even a cheap...
Chinese valve or tube amplifiers - are they any good? Well, I've tried out 2 of them from Hong Kong and the answer in a nutshell is they are absolutely brilliant and easily beat much more expensive transisitor...
Voc Rock Guitars Audio Reviews on ECC83 12AX7 Pre amp tubes. Essentially there are only 3 major tube manufacturers remaining in the world today. We decided to put the 3 most popular tubes manufactured by...
I don't usually get on my high horse, but I keep on seeing various eBay items that explain how to service your own valve amplifier, etc. Note: For anyone who pooh-whos this and chooses to ignore what I am...
Vintage Guitar Valve Amps Over the years and due probably to some kind of cognitive disorder I have bought, sold, owned, swapped and broken many old valve guitar and bass amplifiers. I am not qualified in any...
Heres how to test that old valve amp you found in the attic. Why, just find the nearest mains socket and plug it in! See the lights come on therefore it works! Its obvious isn't it? - but not so obvious is...
There are a number of sellers on e-bay that are advertising Sound City amplifiers as being produced by Dave Reeves, founder of Hylight Electronics (manufacturer of Hiwatt amplification). Whilst it is true that...
Military valves have different markings to commercial valves. Most have a CV number (CV = common valve) It is best explained with an example. I recently sold some E88CC or 6922 with the following markings...
Marshall DSL50 Valve Biasing. When replacing or changing power valves in this amp or others like it, it is important to purchase a matched pair of power valves from your supplier. The power valves in the...