AUDAC EPA104 – Quad-Channel Class-D Amplifier, 4 x 100W with Crossover
AUDAC EPA104 – Quad-Channel Class-D Amplifier, 4 x 100W with Crossover is backordered and will ship as soon as it is back in stock.
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AUDAC EPA104 – Quad-Channel Class-D Amplifier, 4 x 100W with Crossover
What is the AUDAC EPA104 class-D amplifier?
The AUDAC EPA104 is a 1RU 4-channel class-D power amplifier delivering 4 x 100 W into 4 Ω. It is an energy-efficient choice for low-impedance music systems in restaurants, retail, conference rooms and multi-purpose spaces. It drops into a 0.8 W standby mode when no audio is present.
How does the AUDAC EPA104 class-D amplifier work?
The EPA104 produces 4 x 50 W into 8 Ω or 2 x 200 W bridged into 8 Ω, with a full 20 Hz – 20 kHz response. A built-in crossover splits channels into full-range and subwoofer outputs, so one amp can run satellites and a sub; the mode is set by a switch next to the XLR inputs. Outputs use 2-pin Euro terminal connectors. Convection cooling means no fan noise in quiet rooms, and protection covers DC faults, shorts, overheating and overload. Auto-standby after 30 minutes without signal saves energy, and the unit is Energy Star certified. Compare the EPA models below.
The EPA series compared:
| Model | Channels | 4 Ω | 8 Ω | 8 Ω bridged |
|---|---|---|---|---|
| EPA152 | 2 | 2 x 150 W | 2 x 80 W | 300 W |
| EPA252 | 2 | 2 x 250 W | 2 x 130 W | 500 W |
| EPA502 | 2 | 2 x 500 W | 2 x 300 W | 1000 W |
| EPA104 | 4 | 4 x 100 W | 4 x 50 W | 2 x 200 W |
What are the key features of the AUDAC EPA104 class-D amplifier?
- 4 x 100 W @ 4 Ω — 4 x 50 W @ 8 Ω.
- Integrated crossover — run satellites and a subwoofer from one amp.
- Auto standby — 0.8 W after 30 minutes with no signal.
- Convection cooled — silent operation.
- Energy Star certified — low running cost.
- 1RU steel chassis — standard 19 in rack.
- Warranty — backed by a 5-year AUDAC manufacturer warranty.
Where is the AUDAC EPA104 class-D amplifier typically used?
- Conference room
- Training room
- Commercial meeting space
- Multi-purpose room
- House of worship
- All-hands room
Technical Specifications
| Model | EPA104 |
| Power (AES) | 4 x 100 W @ 4 Ω; 4 x 50 W @ 8 Ω; 2 x 200 W @ 8 Ω bridged |
| Frequency response (±3 dB) | 20 Hz – 20 kHz |
| Signal/noise | > 90 dB |
| THD+N | < 0.1% |
| Crosstalk | > 70 dB |
| Input sensitivity | 0 dB (1 V RMS) |
| Input impedance | 12 kΩ balanced |
| Inputs | XLR female, with crossover mode switch |
| Outputs | 2-pin Euro terminal |
| Technology | Class-D |
| Power | 100–240 V AC, 50/60 Hz, switching |
| Consumption | 188 W |
| Cooling | Convection |
| Dimensions | 18.98 x 1.73 x 12.99 in (W x H x D) |
| Weight | 9.92 lb |
| Mounting | 19 in rack, 1RU |
| Warranty | 5 years |
Frequently Asked Questions
Can it run 70V speakers?
No. The EPA series is for low-impedance (4 or 8 Ω) speakers.
How does the crossover work?
A switch sets the amp to run some channels full-range and others as subwoofer outputs, so one 1RU unit powers satellites and a sub.
What speakers work with the EPA104?
It drives 4 or 8 Ω speakers. For 70V/100V lines, use the AUDAC SCP, CEP or PMQ series. Browse matching AUDAC speakers in the AUDAC collection.
What warranty does the EPA104 carry?
AUDAC covers it with a 5-year manufacturer warranty.
Can Creation Networks install the EPA104?
Yes. We design, install, program and support AUDAC systems nationwide. Call (888) 230-3661.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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