Here are the current features of Trinity, though some things may change:
- Two channels, each with 3 inputs. Mic, Line, and front panel DI. The Mic/Line is a switch on the front panel, with one XLR in/out per channel on the back side.
- Triode powered throughout. The input is a single triode (1/2 12AX7) per channel, followed by a 6922 dual triode output section. Engaging the EQ adds one more triode - the other 1/2 of a 12AX7. 4 tubes total in this box (2 per channel).
- Switches for phase reversal, EQ in/out, phantom power, mic/line, low cut filter, and frequency selectors for the EQ.
- Dual analog VU meters
- The EQ section is a passive Baxandall shelving EQ with 2 frequency choices for bass and 2 for treble. The low cut is inductor based, which is far more expensive to implement than the common capacitor based low cut, but it allows for a steeper cutoff slope. Its effect starts to be realized at 75Hz, but becomes obvious at 50Hz.
- External power supply for low noise operation.
- This will be the first LBA product which utilizes solid state components, although the solid state stuff is completely limited to the power supply only. The heater filament power section is DC powered and regulated for quiet, hum free operation. This and the high voltage B+ are silicon diode rectified, which to my ears creates tighter sounding lows and more focused imaging. The B+ regulation holds true to the LBA way of neon tubes, of which there are two.
Trinity has me really thinking big. Mixing board big! I can imaging having four Triinity-style units connected to a summing network with pan controls and a makeup amp for a very serious 8 channel tube Mixer. Believe me, that is absolutely coming up! I just need $10,000 first! lol.