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Audio Research LS17 SE Preamplifier

The original Audio Research LS17 preamplifier was released in 2006 with a list price of $3,995. Using some of the same technology as the REF 3 and LS26 preamplifiers, the LS17 was targeted at a lower price point. The SE version hit the market in 2011 at $5,500. The upgrades in the SE version included “new Teflon coupling capacitors as well as other internal performance enhancements”.

Wyred 4 Sound DAC-2 DSDse Digital-to-Analog Converter and USB Cable

The Wyred 4 Sound DAC-2 DSDse is a new state of the art digital-to-analog converter from a company that has produced a number of high performance digital products over the years. The standard DAC-2 carries a list price of $1499 and the DAC-2 DSDse is $2549.

Sutherland 20/20 and DUO Phono Preamplifiers

Sutherland DUO

The Sutherland 20/20 dual mono moving-coil/moving magnet phono cartridge preamplifier was introduced in 2010 and carries a list price of $2,199. The 20/20 differs from previous Sutherland phono preamps by being powered by the AC line, not by batteries. The design is what Ron Sutherland calls “Two Mono”. There are two entirely separate sections in the single enclosure separated by air, one section for each channel.

Krell Phantom III Preamplifier

The Krell Phantom III Preamplifier is a solid state, solidly built remote controlled preamplifier that carries a list price of $5,500. It has a zero-feedback dual-mono design and is available in anodized silver or black with an optional digital-to-analog converter (DAC) plug in board. The unit under review here does not have the DAC option.

PS Audio NuWave Phono Converter

The PS Audio NuWave Phono Converter is a very useful and, more importantly, very good sounding component for the digital age.

Acoustic Imagery Atsah Power Amplifiers

The Acoustic Imagery Atsah power amplifiers are rated at 400 Watts per mono chassis and carry a list price of $8995 per pair. Besides a power rating that would be a good fit in a system of any size, the amplifiers have a signal-to-noise ratio of 128 dB, which means they can be expected to add very little of their own character to the musical signal passing through.

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