Friedman, Diezel, Bogner: which high-gain head is for you.
Three amps, three different ideas of what high-gain even means.
Published
Updated
Two sides. One page.
Jason Colapietro wrote the piece and the counterpoint against it. Read both sides.
The take is shown below.
I am going to compare three amps I have spent serious time with: the Friedman BE-100 Deluxe, the Diezel VH4, and the Bogner Ecstasy 101B. I have played all three in a studio setting through a Mesa 2x12 cab loaded with V30s and a Marshall 4x12 with Greenbacks. I have used all three on records. I am not a metal guy, so the VH4 review will be biased toward what I actually do with it, which is loud rock.
The Friedman is a Marshall plus. That is the entire pitch. Dave Friedman built it because he wanted the sound of a modded Plexi without owning a fleet of modded Plexis. The BE channel is everything good about a Jose Arredondo-modded Marshall — articulate, aggressive, and forward in the midrange where guitars live in a mix — without any of the noise floor or the inconvenience of having to find Jose. The HBE switch adds gain and tightens the low end. The clean channel is honestly the weakest part of the amp; it is fine but it is not the reason you bought it.
The Diezel is a different animal. The VH4 is a German engineering exercise in punishing low-end clarity. The third channel is the famous one — tight, aggressive, scoopable. The second channel is the underrated one — a beautiful crunch that sits somewhere between a Marshall and a Soldano. The Diezel does not break up musically the way the Friedman does. It either has gain or it doesn't, and when it has gain, the gain is precise and unforgiving. If you play sloppily through a Diezel, the Diezel will tell on you. If you play sloppily through a Friedman, the Friedman will let you off the hook.
The Bogner is the wild card. The Ecstasy covers the most ground of the three. The blue channel is the best clean-to-crunch on any high-gain amp I've used. The red channel is a Marshall in dirty clothes. The Ecstasy is also the most temperamental — it has a structure switch and a pre-EQ switch and three channels and a boost and you can spend an entire afternoon getting lost. The Friedman is plug and play. The Bogner asks you to commit.
Verdict, since you asked. If you are a Marshall guy who wants more, buy the Friedman. If you are a metal player who needs articulation at any gain stage, buy the Diezel. If you are willing to read the manual twice and want one amp that covers the most ground, buy the Bogner. If you don't know which one you are, you are not ready to buy any of these. Save up another six months and play all three in person at the same shop on the same day. Don't trust YouTube videos. The room is more of the sound than the amp is.
'If you play sloppily through a Diezel, the Diezel will tell on you. If you play sloppily through a Friedman, the Friedman will let you off the hook.'
— Jason
Counterpoint, by Jason Colapietro
A high-gain shootout that opens with I am not a metal guy has disqualified itself from judging the VH4, and all three heads lose the 2026 comparison the essay refuses to run.
The disclosure is honest and fatal. The Diezel VH4 is a metal amp, designed for metal, canonized by metal records, purchased overwhelmingly by musicians playing metal. Reviewing it through loud rock ears, as the intro admits, is reviewing a Formula car on the school run. The channels the VH4 lives and dies on under a seven-string in drop A are precisely the ones this comparison has no standing to score, and the readers who most need the verdict get a review written for someone else.
The Friedman-as-plug-and-play crown also deserves its asterisk. Plug and play means voiced to flatter immediately, and immediately flattering voicings are exactly what this magazine's own coverage warns about in every other category: the pedal that wins the shop demo and wears thin at month three. The Bogner's depth, framed here as commitment and temperament, is the amp still offering new answers in year five. The essay's own verdict proves the point: the amp it calls temperamental is the one it trusts to cover the most ground.
And the comparison every working reader is actually running in 2026 never appears: any of these heads against a Quad Cortex or Helix profile of all three, through the same cab. Thirty-five hundred to five thousand dollars of German and Californian tube heads, versus seventeen hundred dollars that carries convincing captures of each, switches channels silently, and flies carry-on. This masthead's own modeling coverage concedes the blind-test gap has closed for most contexts. A three-amp shootout that omits the fourth option isn't a buyer's guide. It is a collection justifying itself.
Three great amps, one real review, and it is the Bogner section. The other two verdicts are autobiography with a wattage rating.
Discussion
- No replies yet. Start the argument.