David Berning Quadrature Z Tube Monoblock Power Amplifiers Pair (1/6)

The world's largest online retailer of pre-owned audio. David Berning Quadrature Z Tube Monoblock Power Amplifiers; Pair. Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including some light scuffs on the faceplate of both amplifiers, along with other scuffs and scratches around the chassis top and side surfaces.

This pair of amplifiers does show a few blemishes, but is attractive overall and has been well cared for. What is Included: Pair of amplifiers, Eight GE 33JV6 tubes, Four 16GK6 tubes, Three Philips 12AT7 tubes, Three Siemens 12AT7 tubes, Manual, Two Power cables, Factory packaging. Other Notes: The Quadrature Z applies the ZH technology to a higher power application, and in particular higher output current capability. The term "quadrature" refers to the interleaving of the impedance conversion process in that parallel impedance conversions are taking place with phase overlap so that all conversion dead time is eliminated. This means that the coupling between the output tubes and the speaker in the Quadrature Z is much tighter than it is with the previous ZH products.

The impedance conversion in the Quadrature Z requires doubling the number of parts that are normally needed, and thus only the most demanding applications can justify the additional cost. Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.

Items with factory packaging will be double boxed. (for all items over 10 lbs). Your online source for the best value in new and used audio gear. The Music Room is the largest online retailer of pre-owned HiFi equipment in the world. Headquartered in beautiful Boulder Colorado, The Music Room is a team of 17 strong (and growing) music lovers - all dedicated to one singular mission: delivering the very best online shopping experience in the audio industry - period.

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