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SounDigital EVO PS 1200.1 — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (1,200W RMS @ 4Ω)
$1,150.00 AUD
SKU: 1200.1EVOPS.4
| Channels | 1 Channel |
| Power | 1200W RMS |
| Year Range | 1998-2013, 2014-2023, 2024+ |
The 1200W mono amplifier for a controlled Harley saddlebag sub or hard-hitting mid-bass stage
The SounDigital EVO PS 1200.1 delivers 1200W RMS into a 4 ohm load from a compact 166 x 149 x 62mm (6.5 x 5.8 x 2.4 in) chassis. It is a single-channel Class-D amplifier built for one purpose on a Harley-Davidson Touring bike: driving a saddlebag subwoofer or a mid-bass stage with authority and control. A damping factor over 2000, locked gain, and high and low level inputs come standard.
The 1200.1 sits in the middle of the EVO PS mono range. It gives you meaningfully more output than the EVO PS 800.1 while keeping current draw sensible, and it steps below the EVO PS 2400.1 for builds that do not need competition-level bass. Unlike the 800.1 and 2400.1, the 1200.1 is a single 4 ohm design, so there is no version choice to get wrong.
Who This Is For
You are building a Harley Touring system where bass is a priority and you want a single amplifier that controls a 4 ohm subwoofer tightly rather than just making it loud. The 1200.1 suits a saddlebag sub, a powered enclosure such as the Precision Power HD14-SBW saddlebag sub kit, or a pair of 8 in mid-bass drivers. If you only need light bass reinforcement, the EVO PS 800.1 draws less current for the job.
What This Is Best For
- A single 4 ohm saddlebag subwoofer. The 1200.1 is rated 1200W RMS at 4 ohm, which is the load most quality motorcycle subs present, so you get full rated power without parallel wiring or a second driver.
- Tight, defined low end. A damping factor over 2000 means the amplifier grips the cone hard and stops it on time. This is the difference between bass you feel as separate notes and bass that smears into a single tone.
- A serious mid-bass stage. With a low-pass filter from 50Hz to 500Hz, the 1200.1 hands a pair of mid-bass drivers such as the Cicada CMB10-S4 the power to punch through wind and exhaust noise at speed.
- Efficient high output. At 90 percent efficiency and 45A during music, the 1200.1 turns alternator current into output rather than heat, so a healthy charging system carries it on a well-planned single-sub build.
Do you need a charging upgrade?
The 1200.1 draws 45A during music and up to 90A at maximum, with a recommended 60A music fuse. A stock Harley charging system in good condition handles this on a single-amp build, but if you run the 1200.1 alongside a speaker amplifier you are adding both current demands together. In that case fit a proper power and ground kit such as the Cicada HDPG2KD dual-amp 2 AWG kit and consider a higher-output stator or lithium battery so voltage stays stable under sustained bass.
The Bottom Line
The EVO PS 1200.1 is the mono amplifier to choose when you want a single 4 ohm sub or mid-bass stage that is controlled as well as loud, with no impedance version to second-guess. Add it to cart above. For maximum bass output from one amplifier, step up to the EVO PS 2400.1, and tune the stage with the SounDigital HKI Mini DSP.
Fitment
| Model | Mounting location | Years |
|---|---|---|
| Street Glide® / Street Glide® Special | Inner fairing, saddlebag or custom amp rack | 2014 to 2024 |
| Road Glide® / Road Glide® Special | Inner fairing, saddlebag or custom amp rack | 2015 to 2024 |
| Electra Glide®, Ultra Limited®, Road King®, CVO | Saddlebag or custom amp rack | 2014 to 2024 |
Inside the EVO PS 1200.1
The output stage is full-range Class-D configured for low-frequency use. Class-D efficiency of 90 percent is what lets a 1200W amplifier run inside a sealed saddlebag or fairing without a heat problem, because most of the current it pulls becomes output rather than warmth. On the road: the amp holds rated output on a long hot run instead of stepping back into thermal protection.
The headline mechanical figure is the damping factor over 2000, an order of magnitude beyond a typical general-purpose amplifier. Damping factor is the amplifier's grip on the voice coil, and a figure this high means the cone follows the signal and stops dead when the signal stops. On the road: fast bass lines stay separate and punchy rather than blurring into sustained boom you feel but cannot follow.
Why the single 4 ohm design is an advantage
Because the 1200.1 makes its full 1200W at 4 ohm, you wire a single 4 ohm sub directly and get rated power with no parallel driver and no 2 ohm or 4 ohm version to match. That removes the most common cause of a mismatched bass stage. For builds that want two subs or a 2 ohm load, the EVO PS 2400.1 is the flexible-impedance option.
Technical Specifications
| Channels | 1 (monoblock) |
| Impedance | 4 ohm |
| Power at 4 ohm (RMS) | 1200W |
| Operating voltage | 8 to 16V |
| Current draw (music) | 45A |
| Current draw (max) | 90A |
| Recommended fuse (music) | 60A |
| Total efficiency | 90 percent |
| Damping factor | Over 2000 |
| Frequency response (-3dB) | 5Hz to 25kHz |
| Signal-to-noise ratio | 90dB |
| Subsonic filter | 5Hz to 40Hz |
| Low-pass filter | 50Hz to 500Hz |
| THD+N (10 percent rated power) | 0.1 percent |
| Dimensions | 166 x 149 x 62mm (6.5 x 5.8 x 2.4 in) |
| Inputs | High level and low level, locked gain |
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- Over $2,500 → FREE
- Bulky items → +$24.95 surcharge (waived over $2,500)
Fast dispatch from Brisbane. Same-day shipping on in-stock orders before 1pm AEST.
Change-of-mind returns: We accept returns within 7 days of delivery on unused, unopened products in original sealed packaging. Restocking fees apply (20–30%). Return shipping is the customer's responsibility.
No returns on opened audio gear, installed items, custom orders, or special-order products. Please check fitment carefully before installing.
Faulty or incorrect items: If you experience an issue, contact us with photos/video and your order number. We'll assess the claim and arrange repair, replacement, or refund for verified faults under the Australian Consumer Law.
Fitment assistance: If you're unsure about compatibility, reach out before ordering—we're happy to help.