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The Mosconi Atomo 2 is a compact 2-channel Class D amplifier rated at 220W RMS (2 x 100W RMS at 4 ohm, or 1 x 220W bridged), part of Mosconi's Atomo range. Measuring just 86 x 65 x 34mm, it suits small hi-fi builds or boosting a factory head unit.
Key specifications
- Channels: 2, Class D
- Power at 4 ohm: 2 x 100W RMS or 1 x 220W bridged
- Power at 2 ohm: 2 x 110W RMS
- Filter: off / high pass / low pass, 80Hz, 12dB/oct
- Input range: 0.4 to 5 Vrms (low level), 1.6 to 20 Vrms (high level)
- Start&Stop compliance: yes
- External fuse: 1 x 15A
- Dimensions: 86 x 65 x 34mm
- Weight: 275g
Mosconi Atomo 2
The Atomo line builds on the digital technology developed in the Mosconi Pico range to deliver efficient, high-quality amplification in a mini format.
The compact dimensions make it well suited to small hi-fi systems or as a straightforward upgrade for factory radios where space is limited.
Features
- Extremely compact 2-channel Class D amplifier
- Wide input voltage range: 0.4–5 Vrms (low level) / 1.6–20 Vrms (high level)
- Inputs flexibly configurable (floating / fixed ground, switchable load resistors)
- Remote detection (BTL)
- High pass / low pass filter
- Inputs designed to Molex industry standard (Micro-Fit)
Explore the full range in Mosconi.
Specification
| Power supply voltage | 10 - 16 V |
|---|---|
| DC-DC converter typology | Unregulated – Push Pull |
| External fuse | 1 x 15 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 | 0.47 A @ 14.4 V |
| Thermal cutoff threshold | 93 °C (± 5 %) |
| Output power RMS @ 4Ω | 100 W x 2 or 220 W x 1 |
| Output power RMS @ 2Ω | 110 W x 2 |
| T.H.D. @ 4Ohm | < 0.3 % (1 kHz / 90 Power rating ref) |
| T.H.D. @ 2Ohm | < 0.5 % (1 kHz / 90 Power rating ref) |
| Minimum load | 2 Ohm with musical signal |
| Low level input sensitivity range | 0.4 ÷ 5 Vrms |
| High level input sensitivity range | 1.6 ÷ 20 Vrms |
| Bandwidth (-3dB ÷ 10W) | 5 Hz ÷ 40 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 - HP - 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 | 275 g |
| Finishing | Black anodized |
What's Included
- Mosconi Atomo 2
Mosconi
About the Mosconi Atomo 2
From our tech experts at CEN
A 2-channel amplifier from Mosconi, Class D, rated at 220w RMS.
Who it suits
Drivers whose speakers have outgrown the head unit. 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.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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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 2?
A: It delivers 2 x 100W RMS at 4 ohm, 2 x 110W RMS at 2 ohm, or 1 x 220W bridged at 4 ohm.
Q: Can the Atomo 2 be used with a factory radio?
A: Yes. It accepts high level signals from 1.6 to 20 Vrms, with autosense power-on from a BTL source, and is Start&Stop compliant.
Q: How big is the Atomo 2?
A: It measures 86 x 65 x 34mm and weighs 275g.
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