Quad 303 High-end boards: the Figures
- Bandwidth: -3dB at 13,5 Hz and 60KHz. Ruler-flat in the passband.
- Distortion (THD): less than 0,015% at 4V RMS 1 KHz, less than 0,04% at 10 KHz
- Crosstalk: less than 65 dB
- Output-power before clipping: 59 W RMS into 8 Ohm (can be limited to 45 W for use with ESL57 speakers)
It is clear that these figures are a lot better than the original 303-specs, specially the THD.
The output-power was measured by Dada Belgium with a Hameg HM8012 multimeter, Hameg HM8037 generator and a Tektronix TDS2012B scope.
The high-end boards and the MJ15003 transistors are for sale in the Dada Electronics Ebay-shop.