Heritage Audio Symph EQ; Stereo Asymptotic Equalizer for Mastering Applications; Carnhill based, transformer coupled balanced inputs and outputs; 73 style class A output stages; stepped controls; Asymptotic Equalizer Section: Hi Frequency shelving: Frequency selectable 8, 10, 12, 15, 20 and 24 kHz, Boost / Cut: 10.5 dB maximum, in steps of 0.5dB, Lo Frequency shelving: Frequency selectable 470, 360, 220, 110, 60 and 20 Hz, Boost / Cut: 10.5 dB maximum, in steps of 0.5dB; Filter Section: 12dB/octave high pass filter, -3dB point selectable at 160, 82, 47, 20 and 15 Hz, 12dB/octave low pass filter, -3dB point selectable at 10, 12, 18, 22 and 30 kHz; Bypass Switch; M/S Switch; incl. external Power Supply; Housing: 19"" 1U