EMI / Neve 1091

These were the channel amplifiers from the classic range of consoles commissioned by EMI for their top studios. The version pictured is actually a Shep clone of this module

dimensions: The front panel of the 1091 measures 45mm x 305mm (1.75" x  8.70")

Technically, these modules have the following features from top to bottom:

Mic gain: -80 to -10dB in 5dB steps
Line gain: +20 to -10dB in 5dB steps
HF peak / dip or shelving switch
HF at: 15, 10, 6.8, 4.7, 3.3kHz and off
HMF at: 8.2, 5.6, 4.7, 3.9, 3.3, 2.7, 2.2, 1.8, 1.5kHz and off
HMF bandwidth switch
LMF bandwidth switch
LMF at: 1200, 1000, 820, 680, 560, 470, 390, 330, 270, 220Hz and off
LF peak / dip or shelving switch
LF at: 300, 180, 100, 56, 33 and off
HPF: 27, 47, 82, 150, 270 Hz and off
LPF: 15k, 12k, 8.7k, 5.6k, 3.9kHz and off
Switch matrix for mic polarity, 48v phantom powering, eq in/out and red button for solo.