Westminster Lab · Phono Stages
Monologue
The Monologue is Westminster Lab's dual-mono phono preamplifier, built around a 260-watt O-core transformer and a phono module you choose.
fig. 01 · phono stages
Monologue
8 photographs · 5 shown
From Westminster Lab
The Monologue borrows its power supply design from the Quest preamp and tunes it for the lowest noise Westminster Lab could get. A custom 260-watt O-core transformer feeds 6 separate regulated rails, and the output stage is dual-mono, so left and right stay apart all the way out.
Channel separation is over 110dB and signal-to-noise clears 120dB. Distortion sits under 0.0001% at 1kHz, and the balanced XLR output swings up to 12Vrms.
Its input is the module you fit. The MC/MM phono module sets gain from 40 to 70dB, impedance in 18 steps and capacitance in 5. A mono version handles mono cartridges, and a DS Audio equaliser module covers DS Audio's cartridges.
Specifications
| Distortion | <0.0001% @ 1kHz |
|---|---|
| Signal-to-Noise Ratio | >120dB, unweighted |
| Input | 1 optional module |
| Frequency Response | 2Hz to 100kHz, 0.1dB |
| Outputs | 1 set of balanced XLR output |
| Output Voltage | up to 12Vrms |
| Channel Separation | >110dB |
| Dimensions | W232 x H110 x D392 mm |
| Weight | 12KG |
| DS Audio Equaliser module: Input | 1 set of unbalanced RCA input |
| DS Audio Equaliser module: Gain | 27dB |
| DS Audio Equaliser module: Compatibility | All DS Audio cartridges. DS Audio certified equaliser. |
| DS Audio Equaliser module: Outputs | 19pin proprietary socket |
| MC/MM Phono module: Input | 1 set of balanced XLR input or 1 set of unbalanced RCA input |
| MC/MM Phono module: Input Impedance | 60Ohm to 47kOhm ( 18 steps ) |
| MC/MM Phono module: Loading Capacitance | 22pF to 322pF ( 5 steps ) |
| MC/MM Phono module: Gain | 40dB to 70db ( 4 steps ) |
| MC/MM Phono module: Compatibility | Variety of modern and vintage MC/MM/MI cartridges. |
| MC/MM Phono module: Outputs | 19pin proprietary socket |
| Mono MC/MM Phono module: Input | Single channel unbalanced; RCA input |
| Mono MC/MM Phono module: Input Impedance | 60Ohm to 47kOhm ( 18 steps ) |
| Mono MC/MM Phono module: Loading Capacitance | 22pF to 322pF ( 5 steps ) |
| Mono MC/MM Phono module: Gain | 40dB to 70db ( 4 steps ) |
| Mono MC/MM Phono module: Compatibility | Variety of modern and vintage MC/MM mono cartridges. |
| Mono MC/MM Phono module: Outputs | 19pin proprietary socket |