I have spent a lot of time listening to my JOB 225 amp with the Lightspeed, Warpspeed and Tortuga based LDR passive pre-amps, as well as the current Bent Audio TAP-X passive autoformer I am using. I can tell you that the latest units from Tortuga will make an excellent match and have the remote features you need, as does the near impossible to find TAP-X. I am waiting for the latest V.2 board that I have ordered from Tortuga, and look forward to comparing it and the TAP-X soon. I have discovered that the sound quality of all of the LDR based pre-amps is VERY dependant upon the power supply being used, as well as the type of wire being used between the supply and the LDRs. Even the fuses in the AC/DC power supply and the AC power cord for the supply make a difference. I have also tried three different types of batteries, but did not care for their sound.
The TAP-X power supply and associated wiring has no effect on its sound at all that I have heard. The power going into the TAP-X is not critical. There are no connections from power to the main output's passive signal path. Great piece of gear!
The TAP-X power supply and associated wiring has no effect on its sound at all that I have heard. The power going into the TAP-X is not critical. There are no connections from power to the main output's passive signal path. Great piece of gear!