jlemaster1957
1000+ Head-Fier
This thread hasn’t seen any action for a number of months, but as I ran across it I will weigh in. I agree that a DAP is probably the best bet for all but the least sensitive IEMs. There are lots of choices nowadays- Hiby, Shanling, Fiio- take your pick there are many reviews on the forum elsewhere. A good portable amplifier alternative to pair with a DAP is the Cayin C9, which accepts only analogue input (either as line in or acting as a power amp from the DAP to retain the DAP sound signature) but both single ended 3.5 mm and 4.4 mm balanced outputs. It has four modes of operation which includes the use (or not) of Korg NuTubes and class A or class AB solid state. It is pricey, but has the advantage of user replaceable batteries, which will extend its useful life for some years.
In terms of a desktop amplifier the new topping A90 discrete has 4.4 mm balanced and 6.35 mm SE outputs and despite claims by some can power IEM‘s without audible hiss, and in L gain with plenty of useable volume. There were reports of volume maxing out on IEMs on the earlier A90 at the lowest possible volume setting where there was some channel in balance, on the new discreet version the channel imbalance is gone and there is much more useable volume. I’m finding on IEMS with typical impedance (20-50 ohms), useable volume range is between 30 and 60 (A90D volume output range 0-100) on low gain. This is all when paired with the Topping D90 SE DAC, which has a preamplifier allowing reduction in output volume, though I am finding even at unity gain (0.00 Db) there is still plenty of useable volume for IEMs. Reviews of the A90D ,and I concur, report that the A90 discrete is much more dynamic in the bass/sub-bass region than the earlier A90. If you are really looking for a desktop unit, this is a pretty good choice. The other one to think about is the Singxser SA-1, which is also been very positively reviewed for use with IEMs.
In terms of a desktop amplifier the new topping A90 discrete has 4.4 mm balanced and 6.35 mm SE outputs and despite claims by some can power IEM‘s without audible hiss, and in L gain with plenty of useable volume. There were reports of volume maxing out on IEMs on the earlier A90 at the lowest possible volume setting where there was some channel in balance, on the new discreet version the channel imbalance is gone and there is much more useable volume. I’m finding on IEMS with typical impedance (20-50 ohms), useable volume range is between 30 and 60 (A90D volume output range 0-100) on low gain. This is all when paired with the Topping D90 SE DAC, which has a preamplifier allowing reduction in output volume, though I am finding even at unity gain (0.00 Db) there is still plenty of useable volume for IEMs. Reviews of the A90D ,and I concur, report that the A90 discrete is much more dynamic in the bass/sub-bass region than the earlier A90. If you are really looking for a desktop unit, this is a pretty good choice. The other one to think about is the Singxser SA-1, which is also been very positively reviewed for use with IEMs.
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