The scratches in the pics are visible cuz of flash otherwise, hardly noticeable.
Im thinking $300/~$400, 4300/225, or best offer.

Thunder225HO Amplifier

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Low impedance, High-Output amplifier.
Individual gain controls for left and right.
2 sets of RCA connectors.

RMS Power measured at 12.5 Volts DC:
25 Watts x 2 into a 4 Ohm load with less than 0.05% Thd+N
50 Watts x 2 into a 2 Ohm load with less than 0.1% Thd+N
100 Watts x 2 into a 1 Ohm load with less than 0.3% Thd+N
200 Watts x 2 into a 1/2 Ohm load with less than 0.5% Thd+N
400 Watts bridged into a 1 Ohm load with less than 0.5% Thd+N

Dynamic Power (IHF-202 Std) measured at 14.4 Volts DC
65 Watts x 2 into a 4 Ohm load
120 Watts x 2 into a 2 Ohm load
200 Watts x 2 into a 1 Ohm load
370 Watts x 2 into a 1/2 Ohm load
700 Watts bridged into a 1 Ohm load

Signal to Noise Ratio:
> or =110dB A-Weighted

Damping Factor:
> 200

Frequency Response:
20Hz-20kHz ± 0.25dB

Dimensions:
13" x 9" x 2" (33cm x 22.8cm x 5cm)
14-1/4" x 9" x 2" (36.2cm x 22.8cm x 5cm) Including IsoFeet(TM)


and

Thunder4300x Amplifier

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The front and rear crossovers are 18dB/octave, continuously variable between 50Hz and 200Hz high pass or low pass, giving you several options in setting up your system.

The new symmetrical power supply allows for better thermal distribution.

The "sum output" jacks on the four-channel amplifiers provide a line level summed output of the right front/right rear and left front/left rear input signals. This output is typically used to drive an external subwoofer amplifier.

RMS Power measured at 12.5 Volts DC:
37.5 Watts x 4 into a 4 Ohm load with less than 0.1% Thd+N
75 Watts x 4 into a 2 Ohm load with less than 0.3% Thd+N
150 Watts bridged x 2 into a 4 Ohm load with less than 0.3% Thd+N

Dynamic Power (IHF-202 Std) measured at 14.4 Volts DC
85 Watts x 4 into a 4 Ohm load
140 Watts x 4 into a 2 Ohm load
280 Watts bridged x 2 into a 4 Ohm load

Signal to Noise Ratio:
> or = 110dB A-Weighted

Damping Factor:
>200

Frequency Response:
20Hz-20kHz±0.25dB

Thunder EQ:
Variable Bass Boost (0-18dB) centered at 40Hz

Crossover:
Variable 50Hz to 200Hz, 18dB/Octave, High Pass or Low Pass Configurable

Dimensions:
13" x 9" x 2" (33cm x 22.8cm x 5cm)
14-1/4" x 9" x 2" (36.2cm x 22.8cm x 5cm) Including IsoFeet(TM)