The tone of the Valveking is often disputed, but seeing as tone is relative, this section provides a base for the REAL tone that Valveking is supposed to provide.
*This is before any modification to the circuit board*

Frettilla's VK analysis

As results of my investigation on my VK112, I think the tone stack of the VK112 (and I think the other VKs also) is the same as the Marshall tone stack, but with different resistor and cap values. But these values give you a very similar curve. A major difference to marshall amps, is that the VK112 has 6L6GC power tubes. They sound different compared to EL34s used in almost all marshall amp. But many amp give you the choice, and run with 6L6GCs, and EL34s also. It depends on you. Other things that shape your sound are, the cab/combo quality, structure, and the speaker. Cab/combo quality and structure are hard to change, but the speaker could be changed easy. That's what I'll try next week. Another plan for the future to use ECC83 tubes in the preamp. I don't really like the VK112s distorted sound with these stock speakers. I think these are cheap all-round speakers, to give you an average sound on the clean channel - which has a Fender-like, but not exactly the same tone stack, but the cap and resistor values give you a Fender sound curve, and an average sound on the dirty channel. I think that's the issue with the stock speaker.

ilya-v 's VK analysis

Great news (old news actually).
Been looking at some schematics for some time.


  • Our Clean channel is exactly a copy of the Fender: Twin Reverb, Bandmaster, Champ, Blackface, etc... Everything from the EQ cap values to the bright switched is ripped from the Normal Channel of any popular Fender amp. Let me hear you say the VK Clean channel sounds like crap.
  • We also got the "Cathodyne" or "Split-Load" Phase Inverter. Yes.... just like any pre 60's amps. Sounds beauitiful when cranked. Fender 5E3 Tweed Deluxe comes into mind. So we enjoy from both worlds... A beautiful Clean Channel & Nice Break-up Phase Inverter.
  • The Peavey Classic 30 & the Valveking are very close to each other. (Almost the same infact). The Classic 30 got the same distortion channel as the VK only with a different EQ slope resistors value. The FX loop is Exactly the same as the VK. Same gain stages. Same Phase Inverter. Same Input Jacks components. The only real difference are the EL84 Power tubes & the Cab Construction.
  • Mesa & Soldano has 39K on V2a an Bogner has 10k.
    V1a & V1b is practicly the same on the VK as on the Mesa & Bogner (Also Peavey XXX & Classic 30).
  • The Valve king is Classic 30 with thicker pre-eq (caps), is also the XXX without the last 2 stages (yes all peavey amps are very similar inside), in fact all tube amps are very similar inside.
  • The Resonance control is like the Presnce control but on the other side of the spectrum.
    It adds low-end.

    How it works:
    The Presence/Resonanse controls are treble/bass CUT, in the feedback loop of the amp.
    As you turn the knob clockwize you cut the frequency in the loop which is added back
    to the inverted signal (feedback) that resulting in BOOST of the cut frequency.

    So leaving the Resonance control on 0 or tight, means it has no effect (like any other
    amp without this control).

    Mesa Rectifier amps has built in (un-controllable) Resonance control in the feedback loop.
    They can turn to mush if added too much bass (be warned).

    So leaving the Resonance control on 10 makes the reponse like a Mesa Rectifier.
    Or leaving in on 0/tight makes the amp sound like any other amp (marshall).


Tone thoughts


Like others have said, we're looking at a Fender clean and Marshall-ish gain channel arrangement. Peavey has their own eq curve they go by and it shows when you run the stacks through
a EQ simulator, like Duncan's Tone Stack Calc. The clean is definitely patterned after a Fender, with the EQ between gain stages. The gain is a little different. Many Marshalls use cathode
follower driven tone stacks, which tends to warm them up. The Valve King does not. The Valve King's EQ is exactly like a typical Marshall, but with more bottom end.

Most of what I would call Peavey mid to high gain sound comes from using 6L6 power tubes. 6L6 break up later and have a bigger bottom end than the EL34's Marshall uses. The Valve King is
a good compromise between having Fender-like cleans and Marshall crunch, though out of the box not perfect. Peavey has a tradition of biasing 6L6's pretty cold, which is great for durability and
tube life, but can be a bit harsh to some ears.

Since no one else has spoke of it, the Class A/AB knob, or Texture as Peavey calls it, is somewhat of a gimmick. What it appears to me to do is unbalance the phase inverter a bit to induce
more even order harmonics while sacrificing power amp gain. This makes the amp seem warmer the more you crank it. It may or may not reduce power as Peavey claims.