AM642D AM642DP AM642D USB
USB Interface - - Stereo In/Out
Connector Type - - USB Type B
Bitrate - - 16-bit
Frequency Response (Mic input to any output)
20Hz ~ 60KHz +0/-1 dB +0/-1 dB +0/-1 dB
20Hz ~ 100KHz +0/-3 dB +0/-3 dB +0/-3 dB
Crosstalk (1KHz @ 0dBu, 20Hz to 20KHz bandwidth, channel in to main L/R outputs)
Channel fader down, other
channels at unity
<-90 dB <-90 dB <-90 dB
Noise (20Hz~20KHz; measured at main output, Channels 1-4 unit gain; EQ at; all channels on main mix; channels 1/3
as far left as possible, channels 2/4 as far right as possible. Reference=+6dBu)
Master @ unity, channel
fader down
-86.5 dBu -86.5 dBu -86.5 dBu
Master @ unity, channel
fader @ unity
-84 dBu -84 dBu -84 dBu
S/N ratio, ref to +4 >90 dB >90 dB >90 dB
Microphone Preamp E.I.N.
(150 ohms terminated, max
gain)
<-129.5 dBm <-129.5 dBm <-129.5 dBm
THD (Any output, 1KHz @
+14dBu, 20Hz to 20KHz,
channel inputs)
<0.005% <0.005% <0.005%
CMRR (1 KHz @ -60dBu,
Gain at maximum)
80dB 80dB 80dB
Maximum Level
Mic Preamp Input +10dBu +10dBu +10dBu
All Other Input +21dBu +21dBu +21dBu
Balanced Output +28dBu +28dBu +28dBu
Impedance
Mic Preamp Input 2 K ohms 2 K ohms 2 K ohms
All Other Input (except
insert)
10 K ohms 10 K ohms 10 K ohms
RCA 2T Output 1.1 K ohms 1.1 K ohms 1.1 K ohms
Ch Equalization
3-band, +/-15dB
(4-band on Stereo Ch)
3-band, +/-15dB
(4-band on Stereo Ch)
3-band, +/-15dB
(4-band on Stereo Ch)
Low EQ 80Hz 80Hz 80Hz
Mid EQ (mono channel) 100-8k Hz, sweepable 100-8k Hz, sweepable 100-8k Hz, sweepable
LMid EQ (stereo channel) 800 Hz 800 Hz 800 Hz
HMid EQ (stereo channel) 3 kHz 3 kHz 3 kHz
Hi EQ 12 kHz 12 kHz 12 kHz
Low cut lter 75 Hz (-18 dB/oct) 75 Hz (-18 dB/oct) 75 Hz (-18 dB/oct)
Built-in Power Supply 100-240 VAC, 50/60 Hz 100-240 VAC, 50/60 Hz 100-240 VAC, 50/60 Hz
Weight 10.6 lbs (4.8 kg) 10.6 lbs (4.8 kg) 10.6 lbs (4.8 kg)
Dimensions (WxHxD)
16” x 3.5” x 14”
(407 x 89 x 357 mm)
16” x 3.5” x 14”
(407 x 89 x 357 mm)
16” x 3.5” x 14”
(407 x 89 x 357 mm)
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