Tortuga Audio Products

LDR3000 Tube Preamp - 3D CAD View

LDR3000T.V25 Tube Preamp Set For September Release

Tortuga Audio plans to release its new LDR3000T.V25 Tube Preamp in September. The LDR3000T is a remote controlled, tube preamplifier that combines Tortuga Audio’s popular LDR (photoresistor) attenuation technology together with a both a triode tube and powerful JFET output buffer to deliver robust sonics that will satisfy the most discerning audio enthusiast. …. Read More >>

Florida Audio Expo 2019 | Tortuga Audio Room

Comments and Pictures From Florida Audio Expo 2019

Tortuga Audio had a great time and a fantastic sounding room at the inaugural Florida Audio Expo in Tampa, Florida in February 2019.  Here are some comments and pictures from that show. The show went off without a hitch, was well attended and the organizers can be quite proud of all the hard work that …. Read More >>

LDRPot.V1 Prototype PCBs

LDRPot.V1 Stepped Attenuator Under Development

A High Performance Stepped Attenuator Tortuga Audio is developing a variant of its LDR (light dependent resistor) based LDR.V25 Preamp Controller as a drop-in replacement for practically any stereo audio volume control potentiometer or stepped attenuator. We are calling it the LDRPot since it uses LDRs and is a direct replacement for a typical stereo …. Read More >>

ldr3.V25 passive preamp - black anodized front - side view

Tortuga Audio Releases LDR300.V25 Buffered Preamp

Tortuga Audio plans to release its new LDR300.V25 Buffered Preamp on August 28. The LDR300 is a remote controlled, singled-ended, active preamplifier that combines Tortuga Audio’s popular LDR (photoresistor) attenuation technology together with a powerful JFET output buffer to deliver robust sonics that will satisfy the most discerning audio enthusiast. …. Read More >>

passive vs active preamps

Active vs Passive Preamp Debate

In this article we take a closer look at what’s going on behind the active vs passive preamp debate and hopefully develop a better understanding so we can all make wiser choices. …. Read More >>

OLED display module - front view

Getting The OLED Out – A Preamp Display Story

In May 2018 we released a newer and better display for our line of LDR preamps. Driven by our latest V25 Preamp Controller, the new graphic OLED display (Organic Light Emitting Diode) provides an intuitive and easy to use control interface that replaces our earlier dual 2-digit 7-segment displays.
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6922/6DJ8 tubes for tube rolling

Tube Rolling The Tortuga Tube Buffer

Designed around the excellent current production 6H30 tube, we’ve concluded that the TPB.V1 Tube Buffer is also compatible with the entire family of 9-pin 6DJ8 / ECC88 / 6922 / 7308 tubes which opens up a big wide world of tube rolling possibilities. And while the 6H30 is a great sounding tube for the Tortuga …. Read More >>

LDR V25 Preamp Controller Board (Rev A)

LDR V25 Preamp Controller Released

Update: April 9, 2017 – The new V25 LDR Preamp Controller board has been released to manufacture and we expect to begin shipping units later this month. The design of the V25 evolved rapidly to overtake our plans for a subsequent V3 thus making the V25 the new V3. Confused? Read on! …. Read More >>

Tortuga Audio TPB.V1 Tube Preamp Buffer

Tube Preamp Buffer Released March 2017

Update – March 1, 2017 – The TPB.V1 Hybrid Tube Preamp Buffer has been released. A review of the TPB.V1 can be found here. …. Read More >>

simplied schematic of Tortuga Audio's tube preamp buffer

Is A Preamp Buffer Right For You?

What Is A Preamp Buffer? To answer the question “What is a preamp buffer?” let’s start with a preamp that has no buffer,  i.e. a passive preamp. At a minimum, a passive preamp provides volume control (attenuation). Optionally, a passive preamp can also provide input switching between multiple connected sources. Passive preamps control volume by …. Read More >>

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