LaChapell Audio 503 500-Series EQ

The LaChapell Audio 503 is a 500-series 3-band EQ based on the 583e mic preamp module.

The LaChapell Audio 503 is a transformer-less, clean and transparent EQ producing very low distortion and minimal phase shift ensuring keeping the punch and detail of the incoming sound.

Each band offers +/-12dB cut or boost and continuous variable frequency control. Low-pass and High-pass filters are also included offering a 50Hz and 150Hz for the low frequencies and 5kHz and 10kHz high frequencies. In addition the 500-series EQ includes +/- 6dB overall trim gain stage.

LaChapell Audio 503 500-series EQ Overview:

• Transformer-less EQ


• Cut/Boost range increased to +/- 12dB


• Low pass filter at 5k & 10k


• High pass filter at 50hz & 150hz


• +/- 6dB overall trim gain stage


• Noise floor: -95dB


• THD+N: 0.012% (@ +4 output)


• Frequency response: 10hz to 50Khz (flat)


• Cut/boost range: +/- 12dB


• Max input Lvl: >24dB


• Input Z: 48kohm


• Input/output type: transformer-less