| Product |
Digital Audio Machine |
| |
| AM4 |
|
|
| AM4/A/E |
 |
Stereo Amplifier |
| AM4/B/E |
|
Balanced Audio and S/PDIF Outputs |
| |
E |
A |
B |
| |
| Output |
Stereo unbalanced RCA phono connectors |
| DAC Resolution |
16 Bits |
Deviation from
Linear Phase |
+/-0.5 dB |
| Total Harmonic Distortion |
0.008% |
Dynamic Range
(A-weighted) |
94dB |
Inter-channel
Isolation |
90dB |
Interchannel Gain
Mismatch |
0.1 dB |
| Frequency Response |
10 to 20 Khz +/-0.1 dB |
Maximum Phase
Non-Linearity |
5 degrees |
Line Output Level
Unbalanced |
4.07V p-p max into 20K (volume control adjustable) |
| Line Output Load |
10K Ohm Minimum, 100pF Maximum |
| Media |
Compact Flash (included; contact us for current size)
If purchasing your own, please read How Much Compact Flash? |
| Playback Time |
Many hours, depending upon media
For more info see How Much Compact Flash? |
| Audio Format |
MP3 Fixed or Variable bit rate;
16 bit linear PCM (WAV) |
| |
| Output Power |
20 watts into 8 Ohms (15 watts when operated from a 12V supply or vehicle battery.) |
| THD |
Typical THD is 1% at nominal power. |
| |
| S/PDIF Digital Audio
Output |
IEC958 (Stereo), RCA phono connector |
| Balanced
Output Level |
+4dB |
| Balanced Output Connector |
Dual Female XLR and 1/4 inch phone jack (combo) |
| |
| 100 Base-T |
RJ-45 |
| Protocols |
FTP file transfer
protocol
UDP control protocol |
| |
| Parallel |
DB-37F parallel inputs select clips, play, stop, loop, mute
Contact closure or voltage inputs |
| Serial |
DB-9M RS-232, 9600 N,8,1 |
| Real Time Clock |
Triggers files or playlists by day, date, time of day |
| Ethernet |
UDP control (see option E) |
| Response Time |
Less than 33 msec. |
| Buttons |
Front panel test button |
| Display |
Front panel bi-color LED |
| Switches |
Ground lift, contact/voltage control, GPS Enable, Write Protect |
| Pots |
Audio Volume Control |
| GPS |
NMEA 0183 compatible protocol on RS-232 input |
| |
| Power |
9VDC to 26VDC 1.5 A max (3.0A max with amplifer option) |
| Power Connector |
Barrel connector (2.5 mm x 5.5 mm x 10 mm) |
| Size |
7"W x 7"D x 1.5"H (17.75 cm W x 17.75 cm D x 4.45cm H) |
| Weight |
4 lbs. (1.8 Kg) |
| Operating Temperature |
0°C (32°F) to 60°C (140°F), free air circulation |
| Operating Environment |
0-90% relative humidity, non-condensing |
| Shock |
20 g max Vibration |
| AC Adapter |
Specify 110 - 120 VAC 60Hz or 220 - 240 VAC 50Hz |
| Power Supply Compliance |
UL, CE, CSA, WEEE, RoHS |
| |
