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Trinity 18 Watt OverviewThe Trinity 18 uses a pair or EL-84 output tubes, 3 12AX7 preamps, and an EZ-81 rectifier. It is a Cathode Bias, Class AB all-tube design using a tube rectifier. Original spec power and output transformers are used exclusively. The amplifier does away with controlled or corrective 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. TMB - The Trinity 18 TMB is a dual channel amp with Channel 1 - Tone and Volume, 2 inputs and Channel 2 - Treble, Midrange, Bass, Volume and Gain, 2 inputs. The tone controls are of standard Marshall “Tone Stack” design. The TMB channel incorporates a gain control and is a higher gain design similar to the Marshall 2203 of the late 70s. The master volume allows the player to selectively dial in overdrive distortion for that ‘crunchy’ Marshall sound. sIII - The two channel Trinity 18 sIII is based on the TMB version. The sIII channel 2 also incorporates a gain control but gain is not as high affording some additional headroom. The sIII is voiced to sound like a vintage Marshall amp - JTM-45 Bluesbreaker style. Channel 1 is the same design as the original Marshall 18 Watt Tremolo channel. Channels can be jumpered for even more complex sounds. This amp is great for reproducing the tones of the early Marshall years. Plexi - The new Plexi design is voiced to sound period correct for a Marshall Plexi Lead. Screaming guitar lead tones at a much lower volume. The amp can thump and grind with less compressed tone than the other 18 watt variants. The normal Channel provides way more overdrive than most 18 watt normal channels while the Plexi channel is capable of the best clean sound we have ever heard come out of an 18 watter. With a pair of greenbacks, you'll be shocked how period correct it sounds. Crank up the gain and you are in crunch tone heaven. The clean boost just adds another dimension, it nails all those old AC-DC tones dead on and has way more gain on tap if needed. v6 - The v6 adds foot switchable output tubes and foot switchable boost. In this design, you can switch in 6V6 or the EL84 output tubes. The sound is close to a Fender Deluxe and an 18 watt grafted together. The 1X12 model weighs in at a healthy 45 pounds. Product SpecsOur Trinity 18 amplifiers are built using point-to-point wiring utilizing turret board construction for service and reliability. High-quality tubes, coupling capacitors and resistors are selected for maximum tone, performance and reliability. Trinity Amps builds three Trinity 18 amplifier versions based on the original Marshall 18 design. The Trinity 18 sIII, 18 TMB, Plexi and v6 all with Treble-Midrange-Bass, Gain and Volume. The power transformer and output transformer are built to the original Marshall specifications and used vintage grade steel laminations. When you purchase a Trinity 18, several options are included in the price:
Other Tolex, grill cloths and hardware are available and priced upon request. The 1X12 Combo weighs 45 pounds and the head version weighs 25 pounds. PricingTrinity 18 Head sIII,TMB or Plexi $1100 What You Should Know About Pricing
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