V25 attenuator & controller

Stepped attenuator and preamp controller The V25 is a digitally controlled, analog 2 channel stepped attenuator and preamp controller. Unlike...

Remote pairing is a process that “teaches” your Tortuga preamp the ID number of  your Apple (or legacy Tortuga remote)...

Application The following information is for Tortuga Audio preamps based on the V25 preamp controller with the OLED display. If...

The following information is for Tortuga Audio preamps based on the V25 preamp controller (released April 2017) with 7-segment LED...

The rotary encoder Different than a potentiometer Encoders differ from conventional potentiometers in the following ways: Encoder control functions Encoders...

Who should read this section? If you’re new to Tortuga Audio preamps and/or you are considering updating the firmware of...

The RCA jack Single-ended audio means there’s only a one audio signal referenced to ground per channel. RCA jacks are...

3 pin XLR wiring Balanced audio signals typically use XLR type 3-pin connections. XLR wiring is unavoidably more complex than...

The OLED (Organic Light Emitting Diode) display assembly combines a 3.2 inch, 256 x 64 pixel OLED graphic screen with a custom adapter board, a rotary encoder, and an infrared receiver module to create an integrated OLED display assembly for Tortuga Audio's LDR stepped attenuator and preamp controllers.

The 7-segment LED display was used by the V2 and early V25 preamp controllers. This display was eventually discontinued and replaced by the current OLED display. Unfortunately they are not mutually compatible.