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These mods are worth doing to any Signature/Bass-Master, IMO.Sound Just like a plexi 50 watt Marshall (when used for guitar); Punk or loud rock (or with channel bridging Entwistle's bass sound) (when used for bass) Better sound as a Fender Bassman (bass and guitar); lower powered, would work just fine in a blues or lower volume setting (?[...] When [the YBA-1] ran on 7027s, it was a rock machine (think Black Crows, Zep, etc.).It probably has a bit less bottom end and more mids and highs now. It must have been one of the last YBA-1 Traynors made.

My personal opinion is that the YBA-1 is better for guitar, while the YBA-1A is preferable for bass. [...] typically playing a new gibson les paul "faded" through them. I got it brand new back in the late 1960s (I traded a dealer my Fender Super reverb even for it). It can be heard on all my recordings, and you can [see] me using it in the videos of my band, Terrain. Specifically, R36 needs to be 68K, not 6K8 as written.

) loud as hell class A circuit so there is little distortion, sounds very punchy and clear very mechanical sounding; SRV and Hendrix heads need not apply.

If you are looking for something original sounding and with a good bit of style, this is it (if you can find one)!

Reliability It's a risky proposition for repairs Old and still going strong Price I bought my YBA-1A [used] about 15 years ago for USD.

[...] The 2nd [used] one I bought off ebay [for] 5 USD was totally moded for guitar with extra pots on the back [...].