Morten Sissener

light dependent resistor gif

Saying Yes To Light Dependent Resistors

Why Light Dependent Resistors? Why did we design our Passive Preamps with light dependent resistors (LDRs)? Because they sound better than all other options. Better than any potentiometer (“pot”), better than any stepped attenuator, and better even than transformer based volume controls. LDRs have excellent sonic quality and make it possible to have no mechanical components (relays, switches, potentiometers) in the signal path.  They are the ultimate transparent volume […]

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The Case for Passive Preamplifiers

The Perfect Preamplifier If you read enough articles on high-end audio you eventually encounter the definition of a perfect preamp: no preamp at all. Just a short wire between the line source and the amplifier. Purity of audio signal maintained unsullied by intervening gear. All fine and good provided you live alone, have few neighbors nearby,  and don’t give a fig about going deaf. Let’s move on. An Active

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tortuga audio LDR6 passive preamp

Tortuga Audio Launches Website & LDR6 Passive Preamp

CAPE CORAL, Florida (October 1, 2012) – Today, Tortuga Audio launched its website/store (www.tortugaaudio.com) highlighting its new LDR6 Passive Preamp. The LDR6 is the first of several high value audio products that Tortuga Audio plans on releasing over the next year geared towards discriminating music lovers interested in high performance 2-channel stereo audio. The LDR6 is designed around the use of audio grade light dependent resistors (LDRs) that are

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example of a digital wireless audio system

Digital Wireless Audio Rocks!

Wireless Audio At Home & Road In my view, nothing puts the sexy back into audio like digital wireless audio. Digital audio is the merging of computer technology and the traditional home audio system. Whether you have a $30,000 audiophile system or a $300 system-in-a-box from Home Depot, digital audio will get your audio mojo working again. Going wireless just adds to the fun, flexibility, and portability. The essence

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V2 controller overview

Stepped attenuator and preamp controller The LDR3x Preamp Controller Rev 2.F, otherwise referred to as the “V2”,  is a digitally controlled, 2 channel analog stereo passive stepped attenuator and preamp controller that was released in May 2014. The V utilizes light dependent resistors (LDRs) for attenuation. The V2 has since been superseded by the V25. Noteworthy features of the V2 include the following: Smooth 70 steps of attenuation over

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V25 controller overview

Stepped attenuator and preamp controller The V25 is a digitally controlled, analog 2 channel stepped attenuator and preamp controller. Unlike most audio attenuation technology the V25 utilizes light dependent resistors (LDRs) for both attenuation and in lieu of conventional relays for input switching. The V25 Preamp Controller (Rev A) was released in April, 2017 and subsequently 2 minor hardware revisions have been made. Noteworthy features of the V25 include

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