Wyetech Labs Pearl Tube Stereo Preamplifier

For sale is the Wytech Labs Pearl stereo preamplifier in excellent condition.

This gorgeous preamp is like new. There are no scratches or blemishes. It works great and sounds fantastic.

The Pearl is a tube preamplifier using 3 6SN7 tubes. This unit has Tung-Sol tubes installed. This is made in Canada to the highest quality standards.


From the Inner-Ear Magazine review:
“The Technology:

The Pearl is a vacuum tube unit that employs a grounded grid configuration, isolated by a cathode follower stage ahead of and subsequent to the output stage. The stages are non-inverting, thus maintaining absolute phase. The grounded grid format is said to provide extremely wide bandwidth and speed. Each cathode follower has been provided with two pairs of RCA output jacks for those who wish to bi-amplify. All stages are DC coupled with only one capacitor used in the output stage for DC blocking. Separate circuit boards for the audio section and mirror imaging circuitry results in a feedback-free design. Wyetech Labs' power supply is one of the industry's prime examples of technical expertise. It provides constant voltage regulation of the 200 Volts DC power line. This is accomplished with a dual filter with two large chokes, a large electrolytic reservoir capacitor, several polypropylene capacitors, and an array of high-power Zener diodes and produces remarkable energy for the analog circuitry. Like the more elaborate Opal preamplifier, the filter functions passively (only passive components are used) to permit the power supply's "speed" to equal that of the analog circuitry. The filaments are operated by DC with the implementation of a three-terminal regulator - a system that provides hum-free operation under burden-some conditions. The tube complement is three 6SN7 dual triodes.

All the technology is accommodated on one solid chassis, with controls that feel smooth and secure.

The volume control is stepped, features gold plated contacts with surface mounted 0.1% precision metal film resistors, providing a channel balance within a tight +/- 0.05dB tolerance. Selector and balance controls are precision

Shallco designs with silver alloy contacts. The unit's power transformer is a toroidal design, chosen for its noiseless operation. Non-magnetic stainless steel and brass hardware are employed throughout.”

This preamplifier will ship in the original factory box for safe delivery