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Car Amplifiers (2ch, 4ch) (Lafayette)
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Note: Please be specific about which amplifier you're interested in
Prices are as listed and firm
Formula Mach-4000(photos 2-3)
$50
2 channel amplifier
spade terminals
made to look like a Kenwood from the late 2000's
unable to any information or official power ratings, but based on the fusing and similar amps I would say it's:
2 x 100-110watts rms @ 4ohms
2 x 150watts rms @ 2ohms
1 x 300watts rms @ 4ohms in bridge mode
4 Channel Amplifiers(for powering door speakers)
Dual Electronics DA10004D (photos 4-6)
$65
80w x 4 @ 4ohms
120w x 4 @ 2ohms
240w x 2 @ 4ohms bridged
Class D
4 gauge power inputs, 12gauge speaker outputs
Adjustments: gain, bass boost, hpf, lpf, crossover switch
Same as Dual XPR84D, DS18 Candy-X4B, Rock Series RKS-P800.4DM, Soundstream RSM4.1200D
Most 4 channel amplifiers are Class A/B which makes them large. This is one of the few Class D 4ch for all those many people who are wanting a compact 4channel amplifier. It can easily fit under most seats and it's actually pretty powerful which is why it uses 4gauge inputs. It's rated at a total of 480watts rms, and it actually puts out more like 520w(most 4ch amps only put out 200w total). It's 240w output in bridge mode is enough power to comfortably run an entry level subwoofer, so besides running 4 door speakers it could also run 2 door speakers plus a subwoofer(like in an older regular cab truck).
Alpine KTP-445 Power Pack (SOLD)
$90
45w x 4 @ 4ohms
Soundstream ST4.1000DB bluetooth amplifier (SOLD)
$115
90w x 4 @ 4ohms
125w x 4 @ 2ohms
This amp is very compact, and powerful too. The average 4 channel amp is 4 times its size and puts out only 45-50w per channel.
missing its top label. I can make handwritten one to label the settings.
has rca and high level(speaker wire) inputs
has mini bluetooth antenna. connected fine when tried in a trunk 8ft away, but will likely be installed be installed somewhere closer anyway like behind dash, glovebox, or under the seat.
The bluetooth feature is something hardly any amp had but leads to many options in versatility. It can stream music directly from phones or other devices, so it doesn't even need a headunit. It can be installed to a boat, motorcycle or atv who didn't come with a stereo without needing to additionally spend time, money and space on also adding a headunit.
Can be spliced into a factory stereo to not only increase power but also give it bluetooth. Same thing for an aftermarket stereo you might like but doesn't have bluetooth.
Great for classic cars because you can keep the original look but still have a way to stream music. I was going to use it on a muscle car to keep the original 1 speaker a/m stereo, but then add a second hidden 4 speaker system with the amp.
5 Channel Amplifiers: For powering an entire sound system(4 door speakers plus a subwoofer)
NVX JAD900.5 (SOLD)
$165
4ohms: 70w x 4 + 220w x 1
2ohms: 115w x 4 + 440w x 1
Bridged mode: 230w x 2 @ 4ohms
Class D
Includes brand new replacement bass knob and cable
8 gauge power inputs and speaker outputs(I will include a pair of 4 gauge to 8 gauge adapters so you can use 4 gauge wiring for the power inputs)
Adjustment: gain, lpf, hpf, subsonic, crossover switch, channel mode switch
Can be used in 5/4/3/ or 2 channel operations
Works even if you only have 4 rca preamp outputs. Has a feature where it can extrapolate bass internally from the other channels and use it as the signal for the subwoofer channel.
Very compact for something that can drive an entire system, should fit under the seats of most trucks or suv's. And it has a decent amount of power to it.