Mosconi Atomo 1 Mono 1 Channel Class D Sub Amplifier 205w
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The Mosconi Atomo 1 is a compact mono Class D subwoofer amplifier producing 205W RMS at 4 ohm and 350W RMS at 2 ohm. Measuring just 86 x 65 x 34mm and weighing 280g, it is part of Mosconi's Atomo range — designed for adding a subwoofer to small hi-fi systems or factory radios.
This listing is the Atomo 1 (mono). The Atomo range is also available as the 2-channel Mosconi Atomo 2.
Key specifications
- Channels: 1 (mono), Class D
- Power at 4 ohm: 1 x 205W RMS (250W at 16V)
- Power at 2 ohm: 1 x 350W RMS
- Filter: off / low pass, 80Hz, 12dB/oct
- Inputs: low and high level, Molex Micro-Fit
- Start&Stop compliance: yes
- External fuse: 1 x 20A
- Dimensions: 86 x 65 x 34mm
- Weight: 280g
Mosconi Atomo 1
The Atomo line draws on the digital technology developed in the Mosconi Pico range, packaged into a mini format suited to small hi-fi builds or factory radio upgrades.
Features
- Extremely compact 1-channel Class D amplifier
- Input sensitivity: 0.26–0.7 Vrms (low level) / 1.3–3.5 Vrms (high level)
- Inputs flexibly configurable: floating / fixed ground, switchable load resistors
- Remote detection (BTL)
- Low pass filter: 80Hz, 12dB/oct
- Molex Micro-Fit industry-standard input connectors
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Specification
| Power supply voltage | 10 - 16 V |
|---|---|
| DC-DC converter typology | Unregulated – Push Pull |
| External fuse | 1 x 20 A |
| Power-on/Power-off voltage threshold | 9 V / 6 V |
| Mute delay time | 3 secs |
| Autosense power-on (HL only) | BTL source only |
| Overall efficiency | > 75 % |
| Standby current | < 0.1 mA (typical) |
| Idle current | 0.45 A @ 14.4 V |
| Thermal cutoff threshold | 93 °C (± 5 %) |
| Output power RMS @ 4Ω | 1 x 205 W (250 W @ 16 V) |
| Output power RMS @ 2Ω | 1 x 350 W |
| T.H.D. @ 4Ohm | < 0.08 % (1 kHz / 90 Power rating ref) |
| T.H.D. @ 2Ohm | < 0.1 % (1 kHz / 90 Power rating ref) |
| Minimum load | 2 Ohm with musical signal |
| Low level input sensitivity range | 0.26 ÷ 0.7 Vrms |
| High level input sensitivity range | 1.3 ÷ 3.5 Vrms |
| Bandwidth (- 3 dB ÷ 10 W) | 5 Hz ÷ 35 kHz |
| Low level Input impedance | > 15 kOhm |
| High level input impedance | 21 Ohm (dummy load with jumper) |
| Ground reference (LL only) | OPEN - 21 Ohm |
| Onboard filter configuration | OFF - LP |
| Onboard filter slope | 12 dB/Oct |
| Onboard filter frequency | 80 Hz |
| Autosense power-on (HL only) | BTL source only |
| Start&Stop compliance | YES |
| Low/High level input | Micro-Fit |
| Speaker out | Mini-Fit |
| Power supply | Mini-Fit |
| Dimensions | 86 x 65 x 34 mm |
| Weight | 280 g |
| Finishing | Black anodized |
What's Included
- Mosconi Atomo 1
Mosconi
About the Mosconi AT1R18852
From our tech experts at CEN
A monoblock subwoofer amplifier from Mosconi, Class D, rated at 205w RMS.
Who it suits
Anyone adding a subwoofer that needs real power behind it. Mosconi is Italian-built and aimed squarely at people who tune systems properly.
Our tech experts advise
Matching matters more than headline watts, and gains want setting with a meter rather than by ear. It needs a fused feed from the battery on the correct cable gauge. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Mosconi range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Mosconi
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
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Bring it to our Beeston workshop and we do the rest.
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How powerful is the Mosconi Atomo 1?
A: It delivers 1 x 205W RMS at 4 ohm (250W at 16V) and 1 x 350W RMS at 2 ohm. Minimum load is 2 ohm with a musical signal.
Q: Can the Atomo 1 be used with a factory radio?
A: Yes. It has low and high level inputs, with autosense power-on from a BTL high level source, and is Start&Stop compliant.
Q: How big is the Atomo 1?
A: It measures 86 x 65 x 34mm and weighs 280g.
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