Products

Electronic Stepped Attenuator | ePot.V3 Max
$249.00
The ePot.V3 Max (the “V3 Max” or just “Max”) is a chassis mounted electronic stepped attenuator and preamp controller board for the DIYer, designer or OEM. The V3 Max provides 2-channel, 100 step stereo volume control, input switching for up to 6 sources, remote control, and optional (but highly recommended) high contrast OLED display with a menu driven interactive user interface. The V3 Max is an analog volume control device run by a software driven 32 bit ARM microcontroller. The audio signals are not manipulated in the digital domain. Analog audio signals passing through the V3 are optically isolated from any power source. There is no active gain stage and there is no active output/buffer stage. Each audio signal sees only 2 resistors (light dependent resistors – LDRs). The LDRs control volume by reducing the voltage of the incoming audio signal. By this definition the V3 is inherently a passive volume controller. By itself, the Max can be used as a passive preamp. When mated to a downstream gain and/or buffer stage the ePot.V3 Max becomes the attenuator/controller of a high performance active preamp. The Max is the successor product to Tortuga Audio’s popular LDR.V25 Preamp Controller. The V3 series represents Tortuga Audio’s 5th generation of of audio attenuation technology designed around light dependent resistors (LDRs).

Select options
LDR Stepped Attenuator | ePot.V4 Max
$275.00
Now accepting Pre-Orders | Only $50 deposit required now
We will invoice you the balance due when the product is released and ready for shipment which is expected before the end of 2024. Secure your spot in the queue now!
The ePot.V4 is a software driven electronic stepped attenuator and preamp controller, that when equipped with appropriate power supply and OLED display module can function as a full featured, remote controlled passive preamplifier, and when equipped with an optional solid state buffer board, can functions as an active preamplifier. Like all Tortuga Audio preamp controllers, the V4 employs light dependent resistors (LDRs) as the sole means for for audio attenuation (volume control). No mechanical potentiometers or switched mechanical attenuators are used. The V4 represents the 5th generation of Tortuga Audio LDR based passive preamp attenuator and controller and builds on work that began over 15 years ago.

Select options
Remote control
$20.00 – $40.00
Apple remote (retired in 2023) Function remote Nettech remote

Select options This product has multiple variants. The options may be chosen on the product page
Electronic Stepped Attenuator | ePot.V3 Mini
$150.00
The ePot.V3 Mini (the “Mini” ) is a high resolution panel mounted electronic stepped attenuator that offers exceptional sonic performance with advantages that no mechanical attenuator can match including a high resolution 100 step volume control, local & remote control, channel balance adjustment, muting and optional menu driven high contrast OLED display.

The V3.Mini enables the audio hobbyist, professional designer or OEM to build or refurbish passive or active audio preamps that rival the performance of some of the best high end preamp equipment available today regardless of price.

While you can purchase the Mini “bare” without an attenuation module, we pre-select a plug-in LDR (light dependent resistor) attenuation module by default but you can opt for a discrete resistor attenuation module instead, or opt for both. The two module types are interchangeable.

The graphic OLED Display Module (sold separately) integrates with the V25 to provides an easy and intuitive user control experience through an interactive menu driven control interface designed around the 7-button Apple remote.

Select options
LDR attenuation module | V3 & V4
$49.00
The quad LDR Module works only with the V3/V4 series of Tortuga Audio preamps and preamp attenuator/controller. Click here to check out the single LDR Module for the V2/V2.5 series preamps/controllers. The quad LDR module was first released along with the ePot.V3 series Mini and Max preamp controller & stepped attenuator models. The newer V4 series controllers uses the same quad module. An LDR module is usually purchased at the same time as a Mini or a Max preamp controller board, however, the quad LDR attenuation module can be purchased here separately.

Add to cart
SSPB.V2 Solid State Preamp Buffer
$219.00
The SSPB.V2 Solid State Preamp Buffer (the “SSPB” or “buffer”) is an elegantly simple high performance solid state JFET buffer with flexible configuration options including an optional op amp input/gain stage and the ability to run the buffer as a pure direct coupled input & output discrete buffer.

The kit is geared towards the audio DIYer who is looking to add a solid state buffer to an existing passive or active preamp to improve performance due to impedance mismatch or are looking to increase system dynamics.

When equipped with a volume controller on the front end (not included in this kit) the combined volume control/buffer becomes an effective active preamp with or without gain.

The kit is supplied as a “bag of bag of parts” and requires assembly via soldering. When fully assembled this buffer kit is a circuit board populated with parts. The kit does NOT currently include an enclosure, interface sockets, jacks, wiring or other items typically needed to build a finished stand alone buffer product. Those items are left to the DIYer to source, assemble and integrate.

Select options
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.

Select options This product has multiple variants. The options may be chosen on the product page
TPB.V3 Tube Buffer
$1,495.00 – $1,695.00
Due to ongoing supply chain challenges, we have suspended production of this buffer, and are not taking new orders currently.

The TPB.V3 is a high performance hybrid buffer that combines a tube input stage with a solid-state JFET output stage to deliver robust dynamic sound with just the right amount of tube euphonics to breath new life into your music and your existing audio gear. Don’t be surprised if you find yourself enjoying your music collection all over again…and again!

The TPB.V3 is an ideal addition to both passive (Tortuga Audio LDR passives) and active preamps as well as any DAC or other audio source with its own volume control. The TPB.V3 comes in both single-ended (RCA) and balanced (XLR) models.

This buffer is built to order so please allow 5-10 days from order to ship date.

The TPB.V3 enclosure is identical to the LDR3000x preamp series shown in the pics here except the front panel will not have a knob or lens but will instead have a centered blue status LED. Images of the actual buffer enclosure will be posted when they become available.

Select options This product has multiple variants. The options may be chosen on the product page
LDR3000x.V3 High Performance Passive or Active Preamp
$1,495.00 – $3,295.00
The LDR3000x.V3 line has been discontinued as of July 2022 due to changes in the company business plan going forward. Tortuga Audio continues to develop, manufacturer and supply its core LDR stepped attenuation and preamp controller technology to other OEMs and the DIY community.

The LDR3000x.V3 is a flexible high performance, remote controlled, LDR (light dependent resistor) preamp available in 9 different configurations including as a passive, as an active solid state or as an active tube type preamp. Each type can be ordered as single-ended only (3 in | 2 out | RCA), balanced only (3 in | 2 out | XLR) or mixed RCA/XLR (6 in | 4 out). Each configuration can be remote controlled (Apple remote) or controlled from the front panel (rotary encoder) with a high contrast, white-on-black, interactive menu driven OLED display.

The sound quality of the LDR3000x.V3 is exceptional whether you opt for the passive or one of the active configurations. With 9 different configurations to choose from and the clear, natural proven sound of LDR attenuation, you will not be disappointed.

Select options This product has multiple variants. The options may be chosen on the product page
LDR3000P.V25 High Performance Passive Preamp
$1,995.00
The LDR3000P.V25 is no longer being produced and has been replaced by the LDR3000x.V3 High Performance Preamp which is available with an updated V3 controller and is available configured as a passive preamp at a comparable price.
- Remote controlled passive preamp
- 3 XLR & 3 RCA inputs | XLR/RCA outputs
- 100 step LDR attenuator
- True unity gain passive with dead quiet background
- Hi resolution OLED visual display
If you’re looking for high performance passive preamp we don’t believe you’ll find many passive preamps that sound better than the LDR3000P. Don’t take our word for it. Go ahead, buy one, and you’ll have 30 days to try it at home in your own system. If you’re not happy with the LDR3000P you can return it within 30 days for a 100% refund less your cost for return shipping.
Read more

Review Cart