Compared across 14 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The DS18 FRP-3.5K is a Class D monoblock that plays full range, from 10Hz to 20kHz, instead of bass only. DS18 rates it at 3500W RMS at 1 ohm with 4000W max burst, in a compact chassis with dual cooling fans and full protection circuitry. That makes it useful for subwoofers, mids, horns or an active front stage from one small amp. It suits SPL and active-system builders chasing big power in tight space; rivals in this class are usually bass-only monoblocks, so the full-range band is the main differentiator.
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Lowest price we've seen: $399.95 on Nov 13 at FI Performance. Tracked across 13 stores since Nov 13.
The DS18 FRP-3.5K is a Class D full-range monoblock amplifier rated at 3500 watts RMS at 1 ohm, with 4000 watts max burst power. It covers 10Hz to 20KHz, so it can drive subwoofers, mids, horns, compression drivers or active systems. Its compact micro digital design suits tight installations and custom builds.
It has variable crossover filters, a bass boost, and metal click-step knobs for tuning. LED indicators show power, protect and clip status. Two cooling fans, along with thermal, overload, short circuit, voltage and clipping protection, help it hold up under heavy load.
Construction includes a four-layer PCB, surface mount components and Tiffany-style RCA terminals. The board was tested with Audio Precision verification equipment.
