![]() ![]() The majority of those aberrations reside in the stereo signal, which takes the biggest hit. Even when driving earphones whose impedance fluctuates wildly, the D1 drives a decent signal, with only minimal aberration. The D1 supplies most earphones with enough current at any voltage level. Its lack of hiss gives freedom for the midrange and upper frequencies to express detail. You can be sure that pretty much any other earphone will be hiss free. Super-sensitive earphones like the Ultrasone IQ are practically hiss-free. Here are its accolades:Īberration-free frequency response and stereo signals The sweet spot is the portable headphone and the earphone that isn’t overly current-hungry. Like the D3, its power is backed by good, but not perfect current into low-Ω loads. With low-current voltage-hungry phones like the DT880, I have endless pot to play with. That lets me work with about 15% of the volume pot via the Ultrasone IQ. ![]() ![]() Because its gain is aggressive, when listening to earphones, I tend to keep iTunes or Audirvana at about half volume. Unlike the D3, it boasts an on-board volume pot which makes fine-tuning volume much, much easier. Like the D3, it powers my new favorite, Dan Clark’s Alpha Dog, with verve. It’s RCA jacks power 2VRMS, which is perfect for most amps and speakers. Like the D3, the D1 has more than enough juice push headphones like the 600Ω DT880 to too-loud levels. ![]()
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