Aaudio Imports Showcases Ypsilon PST-100 MKII Stereo Preamplifier

Aaudio Imports Showcases Must-Hear Ypsilon PST-100 MKII Stereo Preamplifier

Custom Volume Control and Exceptional Build Quality Make New Tube Preamp a Must-Have Component for No-Holds-Barred Audio Systems

PARKER, CO, Nov. 17, 2011 — Aaudio Imports, a leading supplier of world class high-end audio products, showcases for the U.S. market Ypsilon Electronics’ PST 100 MKII Stereo Preamplifier, a pinnacle in preamplification and a must-have component for building a no-holds-barred audio system.

The PST 100 MKII is a leading-edge tube preamp that uses two Siemens C3m triode tubes, which are rated for 10,000 hours or about 15 years of operation. It possesses exceptional tonal purity and superior dynamics, and projects a transparent, highly integrated soundstage that creates a you-are-there listening experience.

Preamplifiers are designed for a number of tasks: to draw together multiple source components, to attenuate the signal, to achieve volume control, to provide low enough output impedance to drive the cables, and to provide gain if needed.

Ypsilon's PST 100 MKII creates a you-are-there listening experience

Conventional wisdom says the active circuit design is its most critical part. Ypsilon believes signal attenuation, or volume control, is the most critical element in a preamp’s overall sound. As a result, Ypsilon developed a special transformer with 31 taps for the PST-100’s signal attenuation. Produced in-house using the very best materials, Ypsilon’s transformer attenuator produces an ultralinear magnetic circuit, for a boost in output power and a much more musical and detailed sound than conventional attenuators. The attenuator achieves a maximum attenuation of 52db, and is placed after the valve stage, preserving the purity and micro details of the signal.

Unlike Ypsilon, most preamp designers use resistor attenuators for volume control. A series resistor transforms the constant voltage into current, and a parallel resistor transforms the constant current into voltage. But Ypsilon believes the materials used in most resistors are far from ideal, and the sound is often noisy.

The PST 100’s active gain stage is a no–feedback, transformer-coupled single-ended triode that achieves a maximum gain of 12 db. The power supply uses valve rectification and choke regulation. The latter, also known as choke filtration, contributes to an amazingly quiet background by preventing distortions in the capacitors from compromising the music signal.

The PST 100 can be operated in purely passive or active modes, which gives listeners the opportunity to maximize the purity and/or strength of the signal. Active mode is the default setting, while passive mode is recommended for use with source components with less than 3k-ohm output impedance. The PST 100’s maximum output impedance is 150 ohms.

The PST 100 comes equipped with one XLR input and one XLR output, unbalanced, in addition to single-ended inputs and one single-ended output, and four pairs of RCA inputs. Custom-made pure silver wiring is used throughout, and a sturdy six-button remote control is included.

The PST 100 MKII Stereo Preamplifier is available now from authorized Aaudio Imports dealers at a suggested price of $37,000 (U.S. MSRP).

For further technical information, visit Aaudio Imports' website at www.aaudioimports.com.

About Aaudio Imports
Based in Parker, Colorado, Aaudio Imports is a leading supplier of truly world-class high-end audio products to top quality dealers. Its high-end manufacturers, selected from companies around the world, also stand out from the crowd, and include Acapella in Germany, Audiotop in Switzerland, Bergmann Audio in Denmark, Einstein Audio Components in Germany, Isoclean Power in Hong Kong, Lansche Audio and Millennium Audio in Germany, Stage III Concepts in the U.S., Thomas Labusga of Germany, Weizhi Precision in Taiwan, and Ypsilon Electronics in Greece. Aaudio Imports dealers are true music lovers, selected for their product knowledge, listening skills, and desire to seek out only the best for their customers.

About Ypsilon
Ypsilon Electronics, based in Greece, is a highly regarded designer and manufacturer of innovative amplifiers, preamplifiers, DACs, CD Transports and related components. Founded by veteran sound engineers, Ypsilon is dedicated to developing products whose reproduced audio is indistinguishable from live music. For further technical information, visit www.ypsilonelectronics.com.