Great Marshall 18 Watt clone made my Trinity Amos. Celestion G12M Greenback Speaker, Boost switch. In great overall condition, one tear on tolex on top front edge.
Trinity 18 Amp
These amps sound and feel like bona fide Marshalls, albeit quieter, with a design “borrowed” from the early Watkins Dominator circuit. The truly exhibit the much sought after, famous Marshall crunch. Marshall 18 Watt amps were built between 1966 and 1968, or so, and only a few hundred were made. The two-channel amplifier does away with negative feedback, allowing the amplifier to run “open loop” or wide band. This is why the 18 Watt sounds full and rich at low or high volume levels. These ‘features of design’ are very much a part of the distinctive tone.
I have to tell you: it sounds so amazingly incredibly fricken good. It's so much better than what I ever imagined it to be, it's response is fast and tight covering all frequencies - top frequencies are cutting their way through the air, with a lot of edge and it does NOT sound thin and disgusting. Mid-frequencies are in- your-face punchy, and the bottom end is so tight and clear. There are so many natural harmonics in this amp, I don't even know where to start.
We have added to the tonal variety of the original by hand-building four 18 watt Marshall type amps to cover almost all of the Marshall era vintage tones. The sIII, Custom Plexi, Plexi MkII and TMB. We can mix and match channel voicing, for example Plexi TMB channel with sIII Normal channel. We can even customize the amp to run 6V6 power tubes or make the power tubes switchable.
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