As per the Plinius "Plint", there does not seem to be much information or pictures of the 3100B on the internet - not even at Plinius own site.
The Plinius 3100B is a 100W RMS per channel stereo power amplifier which runs in Class-B mode,
From memory it was well built and weight about 15-18kg. It did not run hot, just warm when driving a pair of Celestion SL6s.
|Pix of the Plinius 3100B from NZ eBay equivalent|
|Pix of the Plinius 3100B (rear) from NZ eBay equivalent|
In general, clear presentation but I find the 3100B lack gruntiness with any control at volumes above 10oclock. What I mean is that it's like the older generation of Honda Civic engines - have horsepower but lack torque. So although it can go loud when driving the Celestion SL6s, that's about it. When the volume was at 50% on the pre-amp, the reproduction sound flat. From memory, no details no soundstage; just VOLUME - basically sounding pretty much like the "run of the mill" present day Class-D amps.