I have a Schmidt and an Einstein combo.
If you have not played either, an Einstein also has a more vintage approach to a Diezel sound. It is not as immediate sounding as the higher wattage Diezels, and the 50 watter has a wonderful tone and feel to it.
The Schmidt, being Class A, and 30 watts with larger power tubes, and 15 watts with the 6V6's has even a slightly more vintage feel to it.
It has amazingly beautiful and organic cleans with a terrific reverb on all channels and can do
Fender, to darker type cleans all the way to old style jazz with ease. The amp has an EQ that covers a LOT of territory. If wound up near full, channel one volume has some hair on it similar to the older low wattage single channel amps and really feels good to play. Being only 30 watts if you go through a Deizel 2x12 Tone Tubby loaded ceramic hemp cone cab, the amp sounds simply amazing, with no harsh trebles, flabby bass, and only gets better the more it is used. The Hemp speakers allow you to use more radical EQ, if desired, without the speakers sounding nasty at all. The Diezel TT hemp loaded cab is the perfect match for a Schmidt.
Channel 2 has a slightly different tone to it. While still being a Diezel in every way, it gets the commercial popular Vox-style tones to early
Marshall tones upon request as well as other tones, all dependning on how you set the EQ. The saturation on this channel covers immense ground. By adding more mids the amp can cover other amp company tones that have more pronounced and slightly darker vibes to it, but all useful. The EQ definitely has the Diezel signature feel to it!
Channel 3, while not having an EQ, in my opinion, does not need one. You can change the character of that channel by using the channel 2 EQ, or leave it alone and get the heavier, more famous Diezel type sounds found on your Herbert on Channel 2 of that amp, with the mids sounding slightly more advanced and more powerful, as the Herbert can do.
Remember that this is only a 30 watt amp, so it will not have the powerful authority of 180 watts. However, I use it for everything and just mic it up when needed. It has such feel, natural organic sounds, and touch sensitivity and just feels more natural to me then trying to deal with a Herbert at higher settings. I have owned all the Diezel models and the Schmidt is my favorite...so far. (I'm a lightweight)
I never need 180 or even 120 watts of power any more, but 30 watts sounds terrific in smaller venues and when mic'd up, can cover any situation, even "way huge" audiences.
What I like about the lower wattage is that you are able to turn the volumes up really high and capture the power of the valves running as they should. The amp has the ability to really capture any tones with any saturation you may need. Channel three will surprise you. It is definitely a Diezel amp!
The back of the amp has all the options you will find on the other Diezels except for midi swithching, which I do not use anyway. The build quality and feel are fully Diezel. You will recognize this immediately. Some players on here have found an external device that will do midi swithching for the Einstein and Schmidt, however.
As an alternative to the higher wattage Diezels, this amp is perfect for any situation you feel the Herbert is too powerful for. It takes effects as well as any other Diezel does, has a series and parallel loop as well as two other loops to isolate individual effects for each channel, if desired. It has a terrific compensated out! The foot switch is really good and changes are immediate, and works with any standard guitar cable. This is the greatest of any smaller, low wattage amp I have seen or read about and leaves a lot of the other boutique style amps wanting for versatility. If you need even more breakup, run the amp with 6V6's...it slays!
Please feel free to ask further questions, if you like.