Deaf Bonce MLA-4080 Review: A Budget Class AB Amp for Factory Head Units
Updated: Oct 6
The Deaf Bonce MLA-4080 is a four-channel Class AB amplifier from the Machete MLA line, rated at 80 W RMS per channel into 4 Ω and 120 W per channel into 2 Ω at 14.4 V, with both RCA and speaker-level inputs. At an MRP of ₹17,990 it is the least expensive four-channel Deaf Bonce amplifier we sell, below the Class AB MLA-4120 and the Class D MFA-4.80. It suits a first four-channel system or an amplifier added behind a factory head unit, provided you have room for a full-size chassis. See today's price on our MLA-4080 product page.
Quick summary
80 W x 4 at 4 Ω, 120 W x 4 at 2 Ω, or 240 W x 2 bridged into 4 Ω, all quoted at 14.4 V.
A high-level input takes speaker wires straight from a factory head unit.
High-pass and low-pass filters span 10 Hz to 12 kHz, with up to 12 dB of bass boost at 45 Hz.
Class AB costs space and heat: the chassis is 323 x 216 x 50 mm, and the manual warns it can reach 80 °C in use.
Deaf Bonce MLA-4080 specifications
Specification | Machete MLA-4080 |
|---|---|
Type | Four-channel Class AB amplifier |
RMS power at 4 Ω (14.4 V) | 80 W x 4 |
RMS power at 2 Ω (14.4 V) | 120 W x 4 |
Bridged RMS power at 4 Ω | 240 W x 2 |
Minimum load | 2 Ω per channel, 4 Ω bridged |
Frequency response | 10 Hz – 20 kHz |
Filters | Low-pass and high-pass, 10 Hz – 12 kHz, 12 dB/oct, usable at the same time |
Bass boost | Up to 12 dB at 45 Hz |
Inputs | RCA and high-level (speaker-level) |
Input sensitivity | 0.2–6 V |
Signal-to-noise ratio | At least 90 dB |
Operating voltage | 10–15 V |
Terminals | 4 AWG power, 8 AWG speaker |
Dimensions | 323 x 216 x 50 mm |
Weight (packed) | 2.82 kg |
India MRP | ₹17,990 |
Power, filter, terminal and size figures come from Deaf Bonce's MLA-4080 product page and match our listing. The inputs, bass boost and installation guidance come from the owner's manual it shares with the MLA-4120.
Class AB vs Class D: what the letters cost you
A Class AB amplifier runs its output transistors in their linear region, so a good share of the energy it draws ends up as heat rather than sound. Class D switches the transistors fully on and off, which wastes far less. The Class D MFA-4.80 carries exactly the same published ratings as the MLA-4080, 80 W x 4, 120 W x 4 and 240 W x 2, yet measures 233 x 152 x 55 mm and weighs 1.73 kg packed. The MLA-4080 needs 323 x 216 x 50 mm and weighs 2.82 kg, roughly twice the mounting area.
The extra heat also means the MLA-4080 draws more current from your battery for the same output, which matters in a small car crawling through traffic with the AC on. In return you get a simple, long-established output stage for full-range speakers, and an amplifier that costs ₹12,000 less than its Class D counterpart. Your speakers, door treatment and gain setting will shape the sound far more than the amplifier's class.
Built for factory head units
Factory head units generally have no RCA pre-outs, and that is where the MLA-4080's high-level input earns its place. The factory speaker wires feed the amplifier directly, with no separate converter. The filters span 10 Hz to 12 kHz on both high-pass and low-pass, and the two can work at the same time. Use the bass boost sparingly; 12 dB at 45 Hz asks a lot of door speakers.
Deaf Bonce's manuals for its Hannibal HM-6E (70 W RMS) and HM-6S (100 W RMS) midranges name the MLA-4080 among their recommended amplifiers, alongside the MLA-4120. Both list a 12 dB/oct high-pass at 250–350 Hz as one option, which this amplifier's filters cover; their 24 dB/oct option at 150–250 Hz is beyond them. For a conventional door upgrade, the 65 W RMS MLC-60 component set is, on our own arithmetic, a sensible match for its 80 W channels, although Deaf Bonce's MLC-60 manual does not list the MLA-4080 among its recommended amplifiers.
Four speakers, or two plus a subwoofer
The manual shows both layouts. Four 4 Ω speakers get 80 W each. Alternatively, run the front pair on channels 1 and 2 and bridge channels 3 and 4 into a single subwoofer, which receives up to 240 W at 4 Ω. A Machete ML-12S, a dual 2 Ω 12-inch rated at 300 W RMS, presents 4 Ω with its coils wired in series, so on our own arithmetic it pairs well: 240 W bridged into a 300 W RMS driver. That is our calculation, not a Deaf Bonce recommendation. Never bridge into less than 4 Ω.
What owners and reviewers say about the Deaf Bonce MLA-4080
When we checked in October 2026, we found no owner reviews, forum threads or independent tests of the MLA-4080 that we could read. Deaf Bonce's page and manual carry specifications only. The reviews area on Alphard's own Russian store was empty, and the Ukrainian price catalogue E-Katalog listed no user reviews either. Several marketplaces and car forums were blocked to us, so this is an absence of evidence, not a verdict.
What is verifiable: the specifications agree across Deaf Bonce's page, its Russian store and our listing, and its Hannibal manuals recommend the amplifier. That is manufacturer guidance rather than independent praise. If you own an MLA-4080, we'd like to hear how it copes with heat and long drives.
MLA-4080 vs MFA-4.80, MLA-4120 and MLA-160.4
Against the MFA-4.80 (₹29,990 MRP), the choice is money against space: same published power, but the MFA-4.80 is far smaller and, being Class D, should waste less energy as heat, while the MLA-4080 costs ₹12,000 less and its listing includes the high-level input and bass boost. Both quote a signal-to-noise ratio of at least 90 dB.
The MLA-4120 (₹28,990 MRP) is the same Class AB recipe with 120 W x 4 at 4 Ω and an even bigger 395 x 216 x 50 mm chassis. The Class D MLA-160.4 (₹32,990 MRP) doubles the 4 Ω rating to 160 W x 4 in a 222 x 111 x 44 mm box, but its manual lists RCA inputs only, so a factory system would need a converter.
Who should buy it, and who shouldn't
Buy the MLA-4080 if you are keeping a factory head unit, want four channels for door speakers or two speakers and a modest subwoofer, and have space in the boot for a full-size amplifier.
Look elsewhere if the amplifier has to hide under a seat, if your car's electrics are already stretched, or if you want more than 80 W per channel. The MFA-4.80 solves the space problem; the MLA-4120 and MLA-160.4 solve the power one.
Installation notes for Indian cars
Deaf Bonce's manual says to install the amplifier where the temperature stays between 0 °C and 55 °C, preferably horizontally and with good air circulation, and warns that it can reach 80 °C while playing. A closed car in an NCR summer can come close to that ceiling, so avoid sealed cubbies and carpet-covered mounting. A boot floor board with a gap for airflow usually works.
The manual also asks for a ground cable matching the positive cable's length and diameter, and a fuse holder within 40 cm of the battery's positive terminal. It gives no fuse rating, so size the fuse to protect the power cable; we can advise. VA3 Car Studio in Ghaziabad offers professional installation, including tapping the factory speaker wiring for the high-level input, and can build a custom box if you add a subwoofer.
Price and where to buy
The Deaf Bonce MLA-4080 carries an MRP of ₹17,990. Check today's price and stock on our Machete MLA-4080 listing, which describes it as a genuine Deaf Bonce product, and ask us about India warranty terms.
The bottom line
The MLA-4080 is the budget door into Deaf Bonce amplification: 80 W channels, a high-level input for factory head units, wide filters and a bass boost, all for ₹17,990. The price of Class AB is a large, warm chassis that needs ventilation and draws more current than a Class D equivalent. If you have the space and a modest power goal, it is a sensible buy; if space or efficiency matters more, spend extra on the MFA-4.80.
Deaf Bonce MLA-4080 FAQ
Can the Deaf Bonce MLA-4080 work with a factory head unit?
Yes. It has a high-level input alongside its RCA inputs, so the speaker wires from a factory head unit can feed it directly, without a separate line output converter. Set the gain carefully to match the factory unit's output.
Is the Deaf Bonce MLA-4080 Class AB or Class D?
Class AB, according to Deaf Bonce. That explains its 323 x 216 x 50 mm chassis: Class AB turns more energy into heat than Class D, so it needs a bigger heatsink and draws more current for the same output.
Can the MLA-4080 power a subwoofer?
Yes. Bridging channels 3 and 4 gives up to 240 W into a 4 Ω load, while channels 1 and 2 run the front speakers. A dual 2 Ω subwoofer wired in series presents 4 Ω; never bridge into less than 4 Ω.
Buy Deaf Bonce Amplifiers in India
Check the Deaf Bonce Machete MLA-4080 4-Channel Class AB Amplifier 80W price in India, browse more Deaf Bonce amplifiers or compare all multi-channel amplifiers in India. Want it fitted properly? Book amplifier installation at our Ghaziabad studio.
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