Sorry for the late reply, hopefully better late than never...
What speakers are you guys using with your TPA 3116 amp?
I've used the following speakers with numerous tpa311x amps:
- Overnight Sensations (DIY, Paul Carmody design)
- Slim CGR dMar-Ken 7.3 (DIY, Planet10 HiFi design, using Mark Audio Alpair 7.3 driver)
- Salk Songtowers
I used the Overnight Sensations on my desktop originally, now they are in the garage. Powered by tpa311x amps in both cases.
The dMar-Ken7.3 speakers are now my desktop speakers.
The Songtowers are my living room speakers.
Can it manage something like Fritz speakers at moderate volumes? Moderately loud volumes? Those are supposedly quite efficient and an "easy load on an ampilfier;" 8 Ohms nominal Sensitivity: 87 db (1 Watt, 2.83 V @ 1 Meter).
Can the TPA "crank" efficient speakers? I have some Hawthorne Sterling Silver Iris speakers which are 96 db and the subs are fed via separate amps.
How loud do you want to go? The main floor of my house is entirely open (living room, dining room, kitchen all in one big open space). My tpa3116 amp will make the Songtowers go louder than I'll ever need. But I generally prefer fairly moderate volumes. If you want to power a big outdoor space, or host a rave, or try to get the cops called on you, or you worked around jet engines all your life, the tpa311x amps might not cut it.
Also, do most of you use an outboard pre-amp? Active or passive?
I've more or less done it all. In my garage, the tpa3116 amp connects directly to a smartphone. So the phone acts as the preamp.
In the living room, I use an Emotiva XDA-1, which is both a preamp and DAC.
In my office, I typically build my amps with a volume pot or stepped attenuator, which is a very simple kind of passive preamp. I typically use an outboard DAC between the computer and amp.