Quad ESL-989

Download the Quad ESL-989 brochure
Request the Quad ESL-989 schematic
Download the Quad ESL-989 owners manual
Request the Quad ESL-989 service manual


General information[contribute]

The Quad ESL-989 is an electrostatic speaker. It is part of the Classic series. It was manufactured from 1999 to now.

Quad web site (July 11, 2011): The ESL 989 shares much of its technology with the ESL 988, but it is a larger model with two extra bass panels and a higher rated power supply. The extra panels increase the bass output, but also contribute to an enhanced performance in the mid-band, which was already widely regarded as the cleanest in the world.

Although referred to as 'bass panels', the additional electrostatic panels are, in fact, full range (as are all the panels), but the increase in surface area allows a greater volume of air to be moved, leading to an improvement in the lower frequencies. This particular development had been anticipated for many years, but was never previously regarded as commercially and practically viable. The ESL 989 is Quad's finest loudspeaker. It is a true full range electrostatic loudspeaker reproducing music with an ease and naturalness that is best described as uncanny. It has a virtual absence of the familiar loudspeaker problems of colouration, distortion, phase and frequency response errors. All that remains is the music and the original ambience. To the listener these are the very ingredients needed to create a real sensation of being there. The Quad electrostatic loudspeakers are unique and continue to be in a class of their own, but now have the versatility and range to cope with a much wider repertoire.


Related models

The following models were also produced in the Classic series:

Quad ESL-988
Quad II Classic
Quad II Forty
Quad QC-24

Forum topics on the Quad ESL-989

The following topics regarding the Quad ESL-989 have been found in the forums. If you want to start a new topic, click here.