The TRA Series expands on the SRA’s mantra of “the
right amp for the job.” These 2 rack space ampliers
ulize our advanced, ecient ampliers perfect for
low impedance and transformer isolated 25V, 70V or
100V installaons with modest power requirements.
Choose from 4 models available in 2 and 4-channel
conguraons, with power rangs of 75W and 150W
per channel at 4 Ohms, 70V and 100V. All TRA audio
controls are on the rear panel. A 6-step LED meter for
each channel lets you monitor all levels. TRA ampliers
can drive 4 or 8 Ohm loads and 25V or 70V and 100V
constant voltage lines simultaneously. Output trans-
formers are internally mounted.
The 150W models are also capable of driving 25V
constant voltage lines using the direct coupled
4 Ohm output. TRA Series ampliers incorporate
a switch-mode power supply and Class-D amplier
circuitry, providing an extremely power-ecient
soluon.
All TRA Series ampliers are convecon-cooled,
so there’s lile maintenance aer the installaon,
and no annoying fan noise. Of course you get the
reliability, superior sonic quality and rugged
construcon you’ve come to expect from Ashly.
TRA Features:
• Convecon cooling
• Extremely low noise
• Internally mounted constant voltage transformers
• Extensive protecon circuitry
• 6-Step signal level and clip LEDs
• Level aenuators for each channel
• Euroblock inputs/outputs
• Selectable input sensivity (voltage gain)
• Remote stand-by control
• Adjustable turn-on delay up to eight seconds
• Safety/Compliance: TUV, CE, FCC, RoHS
Note: 0dBu = 0.775 VRMS
Frequency Response
(8 Ohms)
20Hz–20kHz, ± 1.0 dB, -3dBu @ 80Hz
Due to internal HPF
Distoron (SMPTE, typical) < 0.5%–8 Ohm load, 10dB below
rated power
Distoron (THD-N, typical) < 0.5%–8 Ohm load, 10dB below
rated power, 20Hz–20kHz
Damping Factor
(8 Ohm load, < 1 kHz) > 200 into 8 Ohms
Input Impedance 20k Ohms, balanced
Input Sensivity 1dBu (75W), 4dBu (150W)
Voltage Gain 26dB, 36dB Selectable
Maximum Input Level +21dBu
HPF 80Hz 2
nd
Order, Non-defeatable
Cooling Convecon
Output Circuitry Class D
Amplifier/Load Protection Output Overcurent, DC Output, Main
Supply Rail Overvoltage, Chassis Tem-
perature, Inrush Liming, Mains Fuse
Environmental 40-120° F, (4-49° C) noncondensing
Front Panel
Controls AC Power Switch
Indicators (LED color)
Power (Blue), Standby (Yellow),
Protect (Red), Clip (Red) Signal Level
-24dB, -18dB, -12dB, -6dB (Green),
-3dB (Yellow), Clip (Red)
Rear Panel
Controls
Input Aenuators, Gain / Sensivity:
+26dB, +36dB, Remote Stand-by,
Delay
Connectors (each channel) Input: 3-Pin Euroblock
Output: Euroblock
Cordset 3-Prong IEC
TRA SERIES MultiMode Power AMPlifiers
2075 4075 2150 4150
Channels 2424
Max Output Power: Per Channel, 80Hz–20kHz, 1% THD, All Channels Driven
4 Ohms 75W 75W 150W 150W
8 Ohms 40W 40W 80W 80W
Constant Voltage Opons: 80Hz–20kHz, 1% THD, All Channels Driven
25V (per channel) 75W 75W 150W 150W
70V (per channel) 75W 75W 150W 150W
100V (per channel) 75W 75W 150W 150W
Line Current Draw: All Channels Driven @ 4 Ohms
Standby Mode 37mA 39mA 89mA 102mA
No Signal (Idle) 320mA 565mA 370mA 660mA
Typical (1/8 power pink noise) 0.70A 1.25A 1.10A 1.95A
Max (1/3 power sine wave) 1.23A 2.25A 2.10A 3.80A
Thermal Dissipaon: BTU/hr, All Channels Driven @ 4 Ohms
Standby Mode 13 15 14 23
No Signal 61 113 72 137
Typical (1/8 power pink noise) 73 145 111 211
Max (1/3 power sine wave) 85 150 126 263
Signal to Noise
20Hz–20kHz, Unweighted >100dB >100dB >103dB >103dB
©2014 All features, specifications and graphical
representations are subject to change without notice.
Ashly Audio is a division of Jam Industries, Ltd.
DS-1 1213
trA2075
trA2150
trA4075
trA4150
70V Rated 100V Rated
High-Z/Low-Z
Amplier
5-Year Warranty Hand-built in
Webster, NY
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Dimensions 19” W x 3.50" H x 15.5” D (483mm x 394mm x 88.9mm)
Unit Weight 2075/2150: 19.9lbs (9.04kg) 4075/4150: 30lbs (13.6kg)
Shipping Weight 2075/2150: 24lbs (11kg) 4075/4150: 35lbs (16kg)
Power Req. 120VAC, 240VAC ±10%, 50/60Hz (factory set)
