Legacy Products (out of production)

LDR300.V25 Buffered Preamp
$1,495.00
The solid state LDR300.V25 has been discontinued as part of our renewed strategic focus on our passive preamps and related tube based buffers.

The LDR300.V25 Buffered Preamp is a remote controlled, singled-ended, solid state active preamplifier that combines Tortuga Audio’s popular LDR (photoresistor) attenuation technology together with a robust JFET current amplifier (output buffer) to deliver high performance audio that will appeal to the discriminating audio enthusiast.

The LDR300 is a unity gain preamp without the gain stage (amplification) that typically colors, clouds and adds noise to the signal path of most active preamps. The LDR300 embodies the “less is more” design philosophy.

Enthusiasts who value a dead quiet preamp with a deep dark background between the notes, exceptional transparency, and pleasing dynamics, will find the LDR300 to be a very satisfying preamp rivaling many high end peamps at a fraction of the cost. And it comes with a simple remote control and graphic display feedback so you can relax and enjoy your music in comfort from your favorite listening spot.

Comes equipped with a remote, external power supply, 3 inputs and 2 (parallel) outputs using high quality silver/rhodium plating over solid brass Cardas jacks.

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LDR6 Passive Preamp
$1,295.00
As of 7.1.14, the LDR6 has been discontinued and is no longer available for sale.

The LDR6 Passive Preamplifier is a passive (unity gain) 6 input, 1 output preamp/volume controller that is fully controllable via both a front panel control knob and hand held remote (included).

The LDR6 is part of our LDRx family of passive preamps that employ digitally controlled audio grade light dependent resistors (LDR’s) for volume control and also for switching line stage inputs.

We believe (and our customers agree with us) that our LDRx technology renders a truer, cleaner, and more transparent sound than any other volume control technology. The result is astonishing sound at a price that doesn’t force you to choose between an excellent preamp or a new car.

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LDR3.V25 High Performance Passive Preamp
$1,195.00
Please note that the LDR3.V25 has been discontinued and has been replaced by the LDR300x.V3 which comes in both passive and active version.

The LDR3.V25 Passive Preamplifier is a remote controlled singled-ended audiophile grade passive preamp (input selector & attenuator) with 3 RCA inputs and 2 parallel RCA outputs. Being a true passive preamp it is unity gain with no amplification or buffering.

The LDR3.V25 is an updated version of our popular LDR3.V2 model which The Absolute Sound awarded its Golden Ear Award in 2016. The updated LDR3 incorporates our new and improved V25 preamp controller that uses LDRs (Light Dependent photoResistors) for exceptional audio performance.

Enthusiasts who value a dead quiet preamp with a deep dark background between the notes, exceptional transparency, and pleasing dynamics, will find the LDR3.V25 to be a very satisfying preamp rivaling many high end peamps at a fraction of the cost. And it comes with a simple remote control so you can relax and enjoy your music in comfort from your favorite listening spot.

The LDR3.V25 comes in a black or silver anodized front panel and include Cardas RCA jacks with silver/rhodium plating over solid brass and Neotech OCC solid copper point-to-point hookup wire.

Select options This product has multiple variants. The options may be chosen on the product page
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.

Select options This product has multiple variants. The options may be chosen on the product page
LDR3 Passive Preamp
$1,195.00
The original LDR3 has been discontinued and is no longer available for sale. The LDR3 has been replaced by the LDR3.V2.

The LDR3 Passive Preamplifier is a passive (unity gain) 3 input, 2 output preamp/volume controller that is fully controllable via both a front panel control knob and hand held remote (included).

The LDR3 is part of our LDRx family of passive preamps that employ digitally controlled audio grade light dependent resistors (LDR’s) for volume control and also for switching line stage inputs.

We believe (and our customers agree with us) that our LDRx technology renders a truer, cleaner, and more transparent sound than any other volume control technology. The result is astonishing sound at a price that doesn’t force you to choose between an excellent preamp or a new car.

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LDR1B.V25K Balanced Passive Preamp Kit
$1,095.00
Please note that this kit has been discontinued.

The LDR1.V25K is a complete balanced passive preamp kit built around our most advanced LDR.V25 Preamp Controller board. When completed, the V25K kit will have a sonic performance the matches many high-end audiophile preamps at a fraction of the cost.

The kit can now be ordered either with a single input & dual outputs or with dual inputs & a single output.

This kit is sonically identical to our LDR1.V25 Balanced Passive Preamp with the only differences being the front panel material and the hookup wire in the base kit model (can be upgraded at additional cost).

All circuit boards are provided fully built and tested. No soldering of components to circuit boards required.

The kit includes all the parts needed to assemble a complete audiophile grade passive preamp including enclosure, front/rear panels, graphic OLED display, XLR jacks, power supply, manual encoder/knob, remote, wire etc. We provide detailed online information and assembly instructions that even first time DIY builders should have little trouble following.

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LDR1B.V2K Balanced Passive Preamp Kit
$1,095.00
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 LDR1B.V25K Passive Preamp Kit

The LDR1B.V2K is a complete single input balanced passive preamp kit. The kit is substantially identical to the LDR1.V2B Balanced Passive Preamp which is a passive (unity gain) single input, dual output preamp/volume controller for balanced audio.

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

Select options This product has multiple variants. The options may be chosen on the product page
LDR300x.V3 Passive or Active Preamp
$849.00 – $1,049.00
The LDR300x.V3 has been discontinued as of June 1, 2022.

The LDR300x.V3 is an affordable high performance LDR (light dependent resistor) preamp available as either a passive or active type for single-ended (RCA) 2-channel stereo applications for up to 3 separate switchable single-ended (RCA) sources.

Remote controlled (Apple remote) or from the front panel (rotary encoder) with a high contrast, white-on-black, interactive menu driven OLED display.

The passive model utilizes our latest ePot.V3 stepped attenuator/controller with precision closed loop LDR current control for arguably the best sounding purely resistive passive attenuator available today. The active model adds a minimalist solid state gain plus JFET buffer stage that delivers power when and where you need it with no impedance concerns or cable length limitations.

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LDR1.V2 Passive Preamp
$995.00

The LDR1.V2 Passive Preamplifier is a single RCA input, singled-ended audiophile passive (unity gain) preamplifier complete with remote control. Equipped with dual (parallel) RCA outputs, the LDR1 is designed around Tortuga Audio’s latest generation light dependent resistor (LDR) technology.

The LDR1 is a single input version of our popular LDR3.V2 Passive Preamp and benefits sonically from having eliminated all input switching hardward.

The LDR1 comes in black or silver anodized and also clear lacquered bamboo. It comes stock with Cardas gold RCA jacks.

Select options This product has multiple variants. The options may be chosen on the product page
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

Select options This product has multiple variants. The options may be chosen on the product page

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