Originally Posted by MuppetFace
Thinking about picking one of these up at some point in the not-too-distant future. Lately my interest in full-sized rigs has been waning, and I've been moving toward a portable summit-fi setup.
This prompts me to elaborate further on my brief remark in your diary thread. A friend of mine let me borrow his Tera Player and gave me permission to post my findings. We both own the Sennheiser IE800 and I know that he's very fond of his TP + IE800 combo. In our prior conversations we kept disagreeing on my IE800 review, especially on my description of the Senn's bass boost and decrease in bass control when you crank up the volume. My friend assured me that this wasn't the case with his Tera Player and that his rig sounded well balanced and controlled at any volume.
After a few hours of comparative listening between his TP loaner unit and some of my DAPs and amps, I can assure him that his ears are fine. The Tera Player really sounds excellent with the IE800. So far for the good news...
The bad news, however, is that the TP seems to suffer from substantial roll-off in bass. I don't have the means to do proper measurements, but I know the sound characteristics of my gear and test tracks inside out. Based on volume-matched A/B comparisons, I'll go out on a limb and predict that proper RMAA measurements of the Tera Player will show some massive bass roll-off and that its frequency response graph will probably turn out quite similar to that of the Nuforce Icon Mobile amp:
Disclaimer: please note that this is not a measurement of the Tera Player, but just an estimate based one person's ears and several volume-matched comparisons, and I may be completely wrong. So if you're among those who only follow this thread to see the TP debunked as snake-oil, please refrain from cheering and wait until proper RMAA measurements are available.
Last not least, I'll repeat that the Tera Player sounds really excellent with the IE800, easily the best pairing with the Senns I've heard so far. So if you already own a TP, I can highly recommend to give them a try (but please read my review, as there are some usability issues to consider).