LDR3x.V2.1

The V2.1 board has been discontinued and replaced by the LDR.V25 Preamp Controller (the “V25”). The V25 was released on April 1, 2017 with shipping commencing later in April. More information on the V25 can be found here.

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The LDR3x V2.1 is our current product model preamp controller board designed around light dependent resistors (LDRs) that allows the DIY’er to build a passive or active preamp with exceptional audio performance that can be controlled with a remote.

With the V2.1, you can build a world class passive preamp rivaling the best of the best! And with auto-calibration and replaceable LDR modules, your investment in high performance audio will last a lifetime.

LDRs are being increasingly recognized by audio enthusiasts as THE best technology for volume control. And Tortuga Audio’s LDR3x  V2.1 is the most advanced state-of-the-art LDR passive preamp design available.

Tortuga Audio offers add-on products such as a display module, encoder, 3 input switching module, power supply, usb cable etc. to allow the DIY enthusiast to build a full featured audiophile grade passive preamp.