Rockford Fosgate Prime R2-1200X1 review: rated 400, 800 and 1,200 W RMS at 4, 2 and 1 ohm, a 200 A fuse, 1-year warranty and independent bench data. $449.99 USD.
The AudioControl ACR-1 is a $32 wired dash knob that trims bass level on select AudioControl converters, processors and amps. Research-based review, no hands-on test.
Six-channel active line output converter with internal summing, 9.5 V output and 400 W inputs. Specs, newer alternatives and buying advice at $139.87.
Research review of the Helix P SIX DSP MK2: 6-channel Class D amp, 8-channel DSP, 120 W x 6 at 4 ohms, magazine lab results and the newer P SIX DSP Ultimate.
Research review of the archived Helix DSP PRO MK2: 10 outputs, 96 kHz/32-bit path, 8 V output, how it compares with the newer MK3 and what to check on used units.
Six-output car DSP with 96 kHz processing, 107 dB analog SNR and 10 setups. Specification and research review with price check, install notes and rivals.
Research review of the Helix DSP Ultra, a 12-output car audio processor now replaced by the Ultra S: verified specs, install notes, rivals and who should buy.
Audison's bit Ten D is a five-channel car DSP with optical input and AD Link output. We check its published specs, status and value against newer rivals.
Research review of Audison's 13-output car DSP: 12 speaker-level inputs, FIR mode and digital output, about $1,780 in the US, with newer rivals ahead on specs.
Research-based review of the Audison bit Play HD, a 24-bit/96 kHz car media player with Toslink output. Specs, price, alternatives and who should still buy it.
Research-based review of the Audison bit Nove, a 6-in, 9-out car DSP with two optical inputs. Specs, price, availability, rivals and who should still buy it.
Active 2-channel line output converter with 40 V input, 9.5 V output, load select, ground isolation and AccuBASS. Specs, rivals and buying advice at $169.
The AudioControl Epicenter is a $159 RCA-level bass restoration processor with ParaBass and a dash remote. Research-based review of specs, setup and who needs it.
Bass restoration processor and line driver with ParaBASS, a 24 Hz subsonic filter and an ACR-4 remote. Verified specs, rivals and buying advice at $199.
Research-based review of the AudioControl DM-810 car DSP: 8 inputs, 10 outputs, speaker-level inputs and 30-band EQ for $899, with trade-offs and rivals.
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Amplifiers
