Quad IIpower ampfeedsQuad ESL-57speaker
Used together in 1 real system
Strong match
Quad II + Quad ESL-57 is a strong match — the II has the headroom to drive the ESL-57 cleanly.
What the compatibility check found
Power Matching
Pass✓ Amplifier power (15W @ 15Ω) — power handling unverified (no manufacturer power-handling spec available for this speaker); sensitivity 89dB
Impedance Matching
Couldn't verifyInsufficient specification data to verify impedance compatibility
Add impedance specifications to verify compatibility
Power and headroom
- Headroom
- 6.2 dB
- in reserve
- Peak SPL
- 91.2 dB
- at the seat
- Power used
- 3.58 W
- at target level
- Of amp output
- 23.9%
- capacity used
Estimated at an 85 dB listening level, 3 m from the speakers.