Clean used example of these units. Premium VK serviced, with 1 year warranty.
Controls:
Mic/Line switch
Phase switch
Gain: Stepped at -60, -50, -40, -30, -20, -10, -5, 0, +5 dB
Pre/post switch
Foldback 1 & 2
EQ Points:
Low Shelf: 60Hz, 120Hz
Attenuation from -16 to +16 dB
Mids: 1.4, 2.8, 4.1, 5.6, 7.0 KHz
Attenuation from -12 to +12 dB
High Shelf: 8 KHz, 10KHz
Attenuation from -16 to +16 dB
Though not as well-known as the first Trident consoles, (the A-range, of which only about a dozen were made), the B-Range was introduced in 1973 as Trident's second split-design console.
Tony Visconti was an avid fan of Trident gear, and used a Trident B-Range to mix both Diamond Dogs and Young Americans, by David Bowie.