The Resolut X12-DSP BT adds USB and Bluetooth to the X12-DSP for ₹50,000 more. What Resolut publishes, what it leaves out, the external-player alternative, and who should buy it.

The Resolut X12-DSP runs a whole active system from one chassis: 16 processing channels, 12 amplified channels and 12 analogue inputs. What Resolut publishes, how it compares and who it suits.

The Resolut X8-DSP combines a 12-channel processor, an eight-channel 160 W amplifier and built-in streaming. What Resolut publishes, what it doesn't, how it compares and who it suits.

The PXE-R100-8 takes the PXE-R80-8's eight 35 W channels and adds optical and coaxial inputs, ten RCA outputs and 96 kHz processing. Here's who needs those extras, what Alpine does and doesn't publish, and how it fits Indian cars.

Eight amplified channels, six high-level inputs, a 31-band EQ and app or PC tuning: what Alpine's PXE-R80-8 can run behind a factory head unit, where its limits are, and when the PXE-R100-8 is worth the extra.

Alpine sells the PXE-R500S as a six-channel processor with a built-in amplifier and app or PC tuning, but publishes little else. Here's what is known, what to confirm before buying, and how it compares with the PXE-640E-EL and PXE-R80-8.

Alpine's entry-level E-Series DSP amplifier takes a factory head unit's speaker outputs and adds a 15-band EQ, crossovers, time alignment and 4 x 25 W. Here's what it can drive, how it installs, and who it suits.

Alpine's EV-Series PXE-X121-12EV is a 12-channel DSP amplifier designed around the Tesla Model 3 and Model Y. Here's how it connects, what US owners report after installing it, a spec discrepancy worth knowing about, and the India MRP.

The Alpine HDP-D90 is the Status range's DSP amplifier: 12 amplified channels, 10 pre-outs and deep tuning. Its inputs, power, tuning, when you need the RUX-C810 controller, how it compares with Alpine's PXE-X processors, and the fact that we found no owner reviews.

Twelve high-level inputs, eight amplified channels split between 50 W and 25 W, twelve RCA outputs and digital inputs: what Alpine's PXE-X120-8 is built for, how it handles factory systems, and when a cheaper PXE model is enough.

Zapco's largest HB II DSP amplifier explained: why it pairs Class AB with bridgeable Class D, how to split its eight amplified channels, and what the catalogue gets wrong.

A practical look at the Zapco ADSP-Z12 IV-10A: what ten channels of Class D power can drive, how it's tuned without AutoTune, what the closest hands-on test found, and who should buy it.

Same amplifier ratings as the HB 46 II 4A, two more processed channels: how the HB 48 II 4A works as the first box in a system you plan to grow, and where it falls short.

The JL Audio VX800/8i puts eight amplifier channels and a DSP in one chassis. We cover its specifications, active three-way layouts, factory turn-on options, power wiring and what the few owner reviews say.

The six-channel HB II DSP amplifier, explained honestly: six processed channels, four modest Class AB channels, factory head-unit integration, and the speakers it really suits.

The JL Audio VX1000/5i runs four speakers and a subwoofer from one DSP-equipped chassis. Here are its specifications, the subwoofers that match its 600 W channel, how it compares with JL's other five-channel amplifiers, and what owners say.

How the JL Audio VX600/6i six-channel DSP amplifier fits a factory touchscreen upgrade: specifications, sensible channel layouts, TüN tuning, owner feedback and how it compares with JL's two-box alternative.

Zapco's ten-channel DSP with eight Class AB channels, explained from the official specs: what its small channels can drive, how to lay out an active front stage, and how to ask us about availability in India.