History

During the time, when Peter Walker was still in the company, Gradient started to co-operate with legendary Quad and ESL 57 in particular.

That resulted two dipole subwoofer models for Quad’s ESL speakers. A stunning proof that even the best can be improved.

Gradient is the only company ever designed and manufactured products for original Quad.

Along with Gradient Revolution Active, Quad ESL-63 – Gradient SW-63 sub woofer combination is still considered as one of the best loudspeakers ever designed.