Products

LDR Module | V2 & V25
$19.00
This LDR Module is a replacement part for the V2 & V2.5 series of Tortuga Audio Preamp Attenuator/Controller boards. This LDR Module is NOT compatible with the V3/V4 series attenuator/controllers – click here for the V3/V4 series LDR Module.

LDR Modules can be easily removed and replaced and plug into any of the four primary LDR locations on the preamp controller board plus also for input switching on the V25 board.

It’s important to orient the LDR Module properly. The white dot on the LDR Module should be the same side as the white dot on the controller board.

Replacing an LDR Module should only be necessary if the LDR preamp controller exhibits a significant permanent shift in channel balance or a channel stops responding to volume changes. If these problems can’t be resolved by running an Auto-Calibration cycle or if the controller board hangs during an Auto-Calibration cycle, then probably at least one LDR Module requires replacement.

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LDR3.V2 Passive Preamp
$1,195.00
The LDR3.V2 has been updated to the LDR3.V25 which can be found here.

The LDR3.V2 Passive Preamplifier is a remote controlled singled-ended audiophile grade passive (unity gain) 3 RCA input, dual (parallel) RCA output preamp/volume controller designed around Tortuga Audio’s third generation light dependent resistor (LDR) technology.

The LDR3.V2 is an updated release of our previously discontinued LDR3 model and incorporates our latest 3rd generation LDR control technology for exceptional performance.

The LDR3.V2 comes in black or silver anodized and also clear lacquered bamboo. It comes stock with Cardas gold RCA jacks.

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USB Port & Cable
$15.00
This 1 foot cable makes it easy to provide an externally accessible USB connection port to update firmware in a LDR3x Passive Preamp Controller located within an enclosure.

One end of the cable provides a type A USB port that can be attached via 2 screws to a panel. The other end has 5 pin female header that connects to the J8 5 pin male header on the LDR3x board.

For those with a V2 board that already has a micro-USB port board soldered onto the J8 header, you’ll need to first remove that board from the J8 header. We recommend this be done by carefully cutting up the micro-USB port around the pins using a plier/cutter and then using a solder iron to remove any remaining materials from the J8 pins.

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LDR3.V2K Passive Preamp Kit
$795.00
The V2 version of this kit is no longer available. It has been updated to the V25 version which uses the V25 Preamp Controller that was released in Q2 2017.

View LDR3.V25K Passive Preamp Kit

The LDR3.V2K is a complete 3 input, 2 output single-ended passive preamp kit. The kit is substantially identical to the LDR3.V2 Passive Preamp.

The kit includes all the parts needed to assemble a complete audiophile grade passive preamp including enclosure, front/rear panels, dual visual displays, RCA jacks, power supply, manual encoder/knob, remote, wire etc

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LDR3x.V2.1 Passive Preamp Controller
$199.00
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.

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LDRx Passive Preamp
$1,795.00
The LDRx is an audiophile grade passive preamp that combine advanced LDR (light dependent resistor) technology with elegant contemporary styling designed to satisfy the most demanding audio enthusiast. The LDRx comes standard with 3 RCA inputs and dual (parallel) RCA outputs. An optional 4th and 5th input are also available.

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LDRxB Balanced Passive Preamp
$2,695.00
The original LDRxB model is no longer being offered and has been replaced by the updated LDRxB.V25.

The LDRxB is an audiophile grade balanced passive preamp that combine advanced LDR (light dependent resistor) technology with elegant contemporary styling designed to satisfy the most demanding audio enthusiast. The LDRxB comes with 3 balanced XLR inputs and dual (parallel) balanced/XLR outputs. The LDRxB also accommodates a single RCA input and provides a single RCA output.

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Apple Remote
$30.00
All Tortuga Audio preamp products can be controlled remotely via the highly affordable and elegantly simple Apple Remote. As of May 1st, 2014, the Apple Remote replaced the previous offered Tortuga Audio legacy remote.

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PS12.5 Power Supply
$99.00
Please note that the PS12.5 has been discontinued.

The PS12.5 Power Supply (the “PS12.5”) is a high performance 12 VDC switch mode dc regulated power supply for powering the LDR3x Preamp Controller Board (versions 1 or 2) or any other audio device that can benefit from up to 800 mA of clean 12VDC and/or 5 VDC power. The PS12.5 can be configured to run off of either a 115 or 230 VAC source.

Although the PS12.5 can be configured to provide 12 VDC, 5 VDC or both, please note that the LDR3x.V2 board only requires 12 VDC.

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IO3 Relay Board
$59.00
Overview The IO3 (input/output) Relay Board (the “IO3”) is a 1.7 inch x 2.5 inch circuit board that can be interfaced with the LDR3x Preamp Controller Board (versions 1 or 2) to enable switching between up to 3 audio input signals. In addition to its primary switching function, the IO3 also serves as an overall interface…

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