Ashly TRA-4075 Power Amplifier

These 2 rack space amplifiers utilize Ashly's advanced, efficient amplifiers perfect for low impedance, 25V, 70V or 100V installations with modest power requirements.They also feature a switch-mode power supply with Class-D circuitry, providing an extremely power-efficient solution. All TRA Series amplifiers are convection-cooled, so there’s little maintenance after the installation, and no annoying fan noise.

A 6-step LED meter for each channel lets you monitor all levels. TRA amplifiers can drive 4 or 8 Ohm loads and 25V or 70V and 100V Constant Voltage lines simultaneously. Output transformers are internally mounted. All TRA audio controls are on the rear panel.

The TRA-4075 is 4 channels with 75 watts per channel.

Ashly TRA-4075 Features

• Convection cooling
• 2RU configuration
• Extremely low ambient noise
• Internally-mounted constant voltage transformers
• Extensive protection circuitry including output overcurrent protection, DC output protection, main supply rail overvoltage protection, in-rush limiting and mains fuse
• 6-step signal level and clip LEDs
• Rear panel level attenuators for each channel
• Rear panel Gain Switch: +36 dB or +26dB input sensitivity
• Euroblock inputs/outputs
• Selectable input sensitivity (voltage gain)
• Remote stand-by control
• Adjustable turn-on delay up to eight seconds
• Safety/Compliance: TUV, CE, FCC, RoHS
• 5-Year Warranty

• TRA-4075 power amplifier1

• Frequency Response (8Ω)20Hz–20kHz, ± 1.0 dB, -3dBu @ 80Hz Due to internal HPF
• Distortion (SMPTE, typical)< 0.5%–8 Ohm load, 10dB below rated power
• Distortion (THD-N, typical)< 0.5%–8 Ohm load, 10dB below rated power, 20Hz–20kHz
• Damping Factor (8Ω load, <1kHz)> 200 into 8 Ohms
• Input Impedance20k ohms, balanced
• Input Sensitivity1dBu (75W), 4dBu (150W)
• Gain26dBu, 36dBu, selectable
• Max. Input Level+21dBu
• HPF80Hz 2nd Order, defeatable
• Coolingconvection
• Output CircuitryClass D
• Amplifier/Load ProtectionOutput Overcurent, DC Output, Main Supply Rail Overvoltage, Chassis Temperature, Inrush Limiting, Mains Fuse
• Environmental40°-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)
  • Signal level -3dB (yellow)
  • Clip (red)
• Rear Panel
  • Controls: Input Attenuators, Gain / Sensitivity: +26dB, +36dB, Remote Stand-by, Delay
  • Connectors (each channel)
  • Input: 3-pin Euroblock
  • Output: Euroblock
  • Cordset: 3-prong IEC
• Channels4
• Max Output Power
  • Per Channel, 80Hz - 20kHz, 1% THD, All Channels Driven
  • 4Ω: 75W
  • 8Ω: 40W
• Constant Voltage Options
  • 80Hz - 20kHz, 1% THD, All Channels Driven
  • 25V (per channel): 75W
  • 70V (per channel): 75W
  • 100V (per channel): 75W
• Line Current Draw
  • All Channels Driven @ 4Ω
  • Standby Mode: 39mA
  • No Signal (idle): 565mA
  • Typical (1/8 power pink noise): 1.25A
  • Max (1/3 power sine wave): 2.25A
• Thermal Dissipation
  • BTU/hr, All Channels Driven @ 4Ω
  • Standby Mode: 15
  • No Signal: 113
  • Typical (1/8 power pink noise): 145
  • Max (1/3 power sine wave): 150
• Signal to Noise
  • 20Hz - 20kHz, Unweighted: >100dB
• Power Req.120VAC, 240VAC ±10%, 50/60Hz (factory set)
• Dimensions (WxHxD)19" x 3.5" x 12"
• Weight30 pounds