SKU: 25454992880

Ashly TRA4150 Rackmount 4-Channel Power Amplifier With 70V100V Transformer - 80 Watts Per Channel At 8 Ohms

Sale price$1187.55 Regular price$1319.50
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Description

Ashly TRA4150 Rackmount 4-Channel Power Amplifier With 70V100V Transformer - 80 Watts Per Channel At 8 OhmsAshly TRA 4150 overview The Ashly TRA 4150 is a 4 channel convection cooled rackmount P. A. or installation power amplifier housed in a rugged 2RU metal chassis, offering an output of 80 Watts per channel at 8 Ohms, designed to drive 4 and 8 Ohm loads and transformer coupled 70V and 100V lines simultaneously. The coupling transformers are internally mounted. The TRA 4150 incorporates a switch mode power supply and Class D amplifier circuitry,

Ashly TRA-4150 overview

 

The Ashly TRA-4150 is a 4-channel convection-cooled rackmount P.A. or installation power amplifier housed in a rugged 2RU metal chassis, offering an output of 80 Watts per channel at 8 Ohms, designed to drive 4 and 8 Ohm loads and transformer-coupled 70V and 100V lines simultaneously. The coupling transformers are internally mounted.

 

The TRA-4150 incorporates a switch-mode-power supply and Class-D amplifier circuitry, providing a power-efficient solution. The low-noise unit features a switchable HPF filter and selectable gain sensitivity, turn-on delay DIP switches with up to 8 seconds of delay available, and rear-mounted set-and-forget gain controls.

The TRA-4150 is equipped with an internally switchable 120V/240V power supply, extensive protection circuitry, and standard Euroblock inputs along with screw terminal outputs.

2RU rackmount 4-channel power amplifier with 80 Watts per channel power output at 8 Ohms and built-in 60W/70V transformer
Designed to simultaneously drive 4- or 8-Ohm loads and 70V/100V transformer-coupled lines
2-stage high-efficiency switched mode power supply with high power-to-weight ratio
Ultra-quiet convection-cooled operation
On-board 80Hz HPF, selectable gain sensitivity
Up to 8 sec. of turn-on delay with selectable Dip Switch complement
Comprehensive amplifier protection circuitry includes: Output Over-current, DC Output, Main Supply Rail Over-voltage, Chassis Temperature, Inrush Limiting, Mains Fuse
Front Panel Indicators include: overall power, standby, and protect; per-channel clip and signal indicators
Euroblock input connectors, Screw Terminal outputs

Ashly TRA-4150 specs

Power Rating Stereo @ 8 Ohms: 4 x 80W per Ch.
Stereo @ 4 Ohms: 4 x 150W per Ch.
Stereo @ 70V: 4 x 150W per Ch.
Stereo @ 100V: 4 x 150W per Ch.
Damping Factor >200, 8-Ohm load, <1kHz
Input Sensitivity 1.5V
Input Impedance 20 kOhms, Balanced
Gain Selectable 26dB or 36dB
Frequency Response 20 Hz - 20 kHz, +/-1.0dB
Signal-to-Noise Ratio >105dB, 20Hz - 20kHz unweighted
Total Harmonic Distortion (THD) <0.01% (8-Ohm load, 10dB below rated power, 20Hz - 10kHz
Input Connections 4 x Ch.1,2,3,4 3- Pin Euroblock
Output Connectors 4 x Ch.1,2,3,4 Screw Terminals
Controls Front Panel 1 x Power Switch
Controls (Rear) 4 x Gain Control Knobs
4 x Delay DIP Switches
4 x 80Hz HPF On/Off Buttons
4 x Gain Sensitivity Buttons
Indicators 1 x Blue Power On LED
1 x Yellow Standby LED
1 x Red Protect LED
4 x Red Clip LED's
12 x Green -24/-18/-12dB Signal LED's 
8 x Yellow -6/-3dB Signal LED's
Cooling Convection-cooled
Power Consumption 75W (1/8 Power Pink Noise @ 4 Ohm)
Typical Current:
Idle: 0.62A
1/8 Power: 1.98A
Dimensions 19 x 3.5 x 11" (483 x 89 x 279.4mm)
Weight 29.5 lb (13.4 kg)
Specialties Adjustable Turn-On delay Switches
Convection Cooling
Switch-Mode Power Supply
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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SKU: 25454992880

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4.6 ★★★★★
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John H.
Los Angeles, US
★★★★★ 1
Bought a "Used like new" watch. Doesn't keep time
Color: Black/Black/Black/Fast-Wrap
I've had this for a few weeks. Since then, it's lost about 30 seconds. I'm not sure if it's this specific unit that has the issue or the mechanism itself. It's a shame because it's a killer looking watch.
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Reviewed in the United States on May 8, 2026
J
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John
Battle Creek, US
★★★★★ 5
Another Great Timex !
Color: Brown/Brown/Natural, Color: Brown/Brown/Natural
Great beater watch. Lime on hands glows for 15 mins. Indigo is brite. Legibility is great. Fits small wrist well. Great watch!
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Reviewed in the United States on April 14, 2026
H
Verified Purchase
HikerBiker
San Leandro, US
★★★★★ 3
Light, retro watch
Color: Brown/Brown/Natural
This is a light, comfortable and retro-stylish watch. A mixture of plastic, canvas, and faux-leather makes a good match for a college professor's tweed jacket with leather shoulders and elbow patches. It looks and feels cheap but it's actually a pretty good watch. Mine has a high contrast face making it easy to read. The hands have lume on them but it only glows for a few minutes. There is an indiglo feature when you press the winder so that's great. The day window is tiny and almost unreadable even with reading classes but other than that it is very functional. You can adjust the time and day independently (so you don't have to wind through 100+ hours to get the right day displayed). The winder setting to select between time and day adjust is very finicky. Fortunately you only need to adjust the day 5 times a year. The weakest part is the build quality. I'm not expecting Rolex, but the case corrodes really badly and the strap is short and the stitching failed so it fell off my wrist in about 6 months. I replaced the strap with a better one but the case corroded so badly I tossed it within a year. Other than looking cheap, poor build quality, and being thicker than I would like, I think this is a good watch.
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Reviewed in the United States on June 17, 2025
I
Verified Purchase
Irish Wolfhound NYC
New York, US
★★★★★ 5
A nice, comfortable watch.
Color: Black/ Green
A nice inexpensive everyday watch. It is accurate, a nice size for my wrists. You barely feel it as it is so light. it has a nice clear face Andy only gripe is that I wished it had slightly better loom. Other than that it is a great watch for the money and this is coming from someone with 30+ watches in my collection in all price ranges. It has earned its way into my regular watch rotation.
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Reviewed in the United States on August 14, 2025
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Verified Purchase
Bus Driver
Dallas, US
★★★★★ 4
Good Watch for use in water.
Color: Black/ Green
Here's the deal. It's an excellent plastic watch. If you don't abuse it, it should last years. The advantage of metal bodies and crystal faces, is that they're lot more resistant to scratches compared to plastic, BUT they weigh a lot more than plastic watches. I love the size of this watch while at the same time, it surprisingly light on the wrist. Therefore it doesn't move all around like a heavy steel watch. I hardly know Im wearing this plastic watch. Also, I went snorkling offshore for a week with this watch, no leaks, no problems. It will stand up to water fine. So, if you don't abuse it, its a pleasure to wear, lightweight, waterproof, doesnt slip around, looks good. I imagine the battery should last 3-5 yrs like my last plastic quartz watch. For the price, its a very good watch.
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Reviewed in the United States on April 11, 2025

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