1 on 1 Testing

We take a look at two popular items, the PIONEER pio GM-D8704 Class FD and the MTX Audio TNP212D2. You might think it all comes down to the price, but frankly there is a lot more to it. If you enjoy this article, you can also check out the full version here.

 PIONEER pio GM-D8704 Class FDEveryone has different preferences and priorities, so to make choosing easier we have attempted to give a frank review of the products. Let's start with the PIONEER pio GM-D8704 Class FD.

 MTX Audio TNP212D2The challenger is the MTX Audio TNP212D2.


PIONEER pio GM-D8704 Class FD

MTX Audio TNP212D2


+ Four Channels
+ 1,400W Max Power
+ Durable and Compact
+ Won’t Overheat
+ Easy Connectivity

+ Dual subwoofer and amplifier set.
+ 400-watt peak RMS power.
+ Easy installation.


It’s an effective little sub amp that offers easy installation and effective performance. The sound quality is excellent too, as you’d expect from Pioneer.

They are durably made and could well be the simplest and best solution for those looking for a bit of extra bass definition, without the knowledge and know-how of sourcing their set-up.

Read the complete review

Also see Music Critic's article 8 Best Subwoofer Amps in 2023 which includes even more information.

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