Passive Preamps

LDRx vs. LDR3.V2 – A Tale of Two LDR Preamps

  Although we never set out to deliberately cause confusion we have nonetheless succeeded. What confusion you ask? The confusion that arises when prospective customers diligently comb through our website trying to understand the differences between two of our LDR preamps; the LDRx ($1795) and the LDR3.V2 ($1195). The essential confusion can be summed up by this typical prospective customer query: “It appears the differences between these two preamps

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Top 5 Reasons To Choose LDR Passive Preamps

1 – Better Conductor of Music Preamps are, first and foremost, devices for controlling volume. 99%+ of all preamps do this by throttling the audio signal through some type of mechanical device made with resistive materials. Devices like a potentiometer (worst) or stepped attenuator (better). The unfortunate reality is the materials in these devices, together with their mechanical interface points, alter the audio signal in ways that are not

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Customer Brings Tortuga Preamp To Axpona

While chatting recently with a customer (which I love doing BTW) he mentioned that he would be attending Axpona in Chicago and asked if Tortuga Audio would also be at the show. I told him that, unfortunately, circumstances prevented Tortuga Audio from being at Axpona this year. He suggested that in that case he might take his single input Tortuga LDR1.V2B balanced passive preamp along with him to Axpona.

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

What is a Preamplifier and Why Passive?

The Perfect Preamplifier – No Preamp At All If you read enough articles on high performance audio you eventually encounter the definition of a perfect preamp: no preamp at all. Just a short wire between the source and the amplifier. Purity of audio signal unsullied by intervening gear. The problem with no preamp (or a perfect “wire preamp”) is most music sources put out a high enough voltage signal

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LDR1B.V2 balanced passive preamp

LDR1B.V2 Balanced Passive Preamp

Single Input Balanced Passive Preamp March 15, 2015 – Tortuga Audio is pleased to release the LDR1B.V2 Balanced Passive Preamp. The LDR1B.V2 is the latest model in our LDR (light dependent resistor) based passive preamp product line and is our second model offering attenuation for balanced audio. Unlike its more expensive big brother, the LDRxB, the LDR1B.V2 has only a single XLR input with dual (parallel) XLR outputs. It uses the

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LDR3X Front Perspective (artwork - not a photo)

Tortuga Audio to Release LDRx & LDRxB Passive Preamps

LDRx and LDRxB Passive Preamps [Click on pic thumbnails for larger views] The LDRx & LDRxB were released in the fall of 2014. More info on the LDRx can be found here. New LDRxB Balanced Passive Preamp After an epic gestation period, we are pleased to announce the imminent release of our first balanced LDR passive preamp – the LDRxB.  The LDRxB Balanced Passive Preamp is for the discriminating

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Plug-in LDR Module

The Evolution of LDR Volume Control

LDR Volume Control  There’s growing recognition within the community of audio enthusiasts (a.k.a. audiophiles) that LDRs (light dependent resistors) deliver the best sounding volume control technology available today. Over the past 5 years, Tortuga Audio has been leading the charge to evolve and perfect LDR based volume control. In Q2 2017 Tortuga Audio released its fourth generation LDR technology which is included in all of our current passive preamp

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