60
Retro Iron Heritage
Frequency Response
RETRO IRON Engaged on Main Mix
HARD-WIRE BYPASS
±0.1dB (10Hz to 80kHz)
Relay Switched - No Loading Eects
THD and Noise at +22dB Output
0dBu into 600Ω
+24dBu into 600Ω
< 0.016% @ 1kHz
(2nd & 3rd)
< 0.003% at 1kHz
Noise
Tone Shaping EQ
Dynamic Range
RETRO IRON On, EQ O
LOW BUMP
HIGH LIFT
GAIN ADJUST JUMPER
POSITIONS
< -92dBu
(20Hz to 20kHz unweighted)
+2dB wide bell @ 60Hz,
Baxandall Type
+2dB wide bell @ 20kHz,
Baxandall Type
+0.5, +1, +2 (defau
lt) or +3dB Options
120dB
Crosstalk
< -82dB 10Hz to
10kHz, typ. -88dB
@ 1kHz
Maximum Output Level
CARNHILL LINE DRIVER
INSERTION LOSS
OUTPUT GAIN
OUTPUT IMPEDANCE
+28dBu into 600Ω
1dB into 600Ω
(Transformer Loading)
±0.5dB Load Dependant
600Ω
The Heritage Card was designed and built with world class LM4562 operational amplifiers (EQ
stages) and a discrete Class-AB RETRO IRON output stage based upon the best US & UK designs
from the early 1970’s.
Taking influence from two consoles that David Dearden modified and serviced at Advision Studios
in London during his arrival as in-house technician, these consoles became part of the sound
of recording for clients such as David Bowie, Emerson Lake & Palmer, Shirley Bassey, Fleetwood
Mac and many others. The H.E Card oers glue, 3-dimensional detail enhancement and lower
midrange growl - designed by Tom Waterman and fine tuned by ear to reflect these classic tones.