Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: RoadShow on August 09, 2025, 05:19:15 pm
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There have been a lot of posts regarding Rob Robinette’s Soldano analysis, schematics, and building different versions. The information is just fantastic. I also bought the Kuehnel Soldano SLO book and digested that. 2 years ago I began heading towards a Soldano clone build.
I was leaning towards a turret board and began layout of a RR 6L6 version and at the same time was considering buying the Rosamp kit, for a couple of reasons:
1) Nice chassis that was ready to go, spittin’ image and function of the Soldano
2) Circuit board and components ready to go
3) Assembly required
I decided to go for the Rosamp, I bought it last summer, I didn’t actually start building it until early this year, and so often it wound up on the back burner. I finally buttoned it up a month ago, and it sounds fantastic!! Quiet as can be!! I did change the crunch resistor divider network, it was too over the top for me. Last week I built the head cabinet.
I just want folks looking for this type of a build to know that the Rosamp is an excellent way to go. Last summer when I bought it, it was $758 shipped to the USA for the complete kit less tubes. Today, it looks like it's gone up to $888, inflation and tariffs I guess...
It was a great way to go.
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Hello, I’m also a big fan of Mike Soldano. I modded a Jet City 100HDM that I bought second-hand for $300, including a 4x12 cab with amazing Eminence speakers — way more aggressive than V30s and worth around $500 — into a full SLO-100.
Before finally getting it to work, I went through all kinds of trouble: leaky tubes, exploding capacitors, and a failed optocoupler.
I ended up replacing almost every component to get it working… and now, it’s got problems again, haha.
And I have a new project — I’m going to make a small preamp box based on the SLO-100, with both a 3-tube version and a 4-tube version, which I got from DIY Fever.
Do you have an account on SLOcloneforum? I can’t seem to register.
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Yes I do have an account.
I have the same problem with the tubetown forum. I recently tried to register for 2 months several times and gave up. Yes, I checked my spam folder. Never got approval or heard back.
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Yes I do have an account.
I have the same problem with the tubetown forum. I recently tried to register for 2 months several times and gave up. Yes, I checked my spam folder. Never got approval or heard back.
I try more way on answere for collect. it can't