FUN under test in the last month. Very good an powerful sound, no oscillation issues found on scope, so it's able to deliver up to 2W/30Ohms of RMS power without struggling. Also, @600Ohms it can deliver a bit over 170mW RMS power.
Sound is neutral, RMAA shows perfectly flat freq response, as it should be. However, I was able to see a tiny-little phase-shift on trebles, just enough to mellow and warm the sound a little bit, making the songs a bot more laid back.
Frequency response
Dynamic
Signal/Noise Ratio
Lot of power in a small package, I kinda like it. FUN is powered from 2 x dual +/-17V rails, so a total of 34V for the output stage to be able to kick the bass into planars perfectly. There are 4 x SMPS power regulators each one delivering + or - 17V, so each channel is independently powered.
Output DC-voltage was somewhere between 1.5mV and 3.5mV, depending a lot of the op-amps used and the burn-in time (usually after 20 minutes the DC-voltage could get lower). However, few mV are normal and pretty common with most amplifier, hence I consider this amp can be used with IEMs as well, especially that the background noise is even lower than PLAY's internal amplifier.
Sound is neutral, RMAA shows perfectly flat freq response, as it should be. However, I was able to see a tiny-little phase-shift on trebles, just enough to mellow and warm the sound a little bit, making the songs a bot more laid back.
Frequency response
Dynamic
Signal/Noise Ratio
Lot of power in a small package, I kinda like it. FUN is powered from 2 x dual +/-17V rails, so a total of 34V for the output stage to be able to kick the bass into planars perfectly. There are 4 x SMPS power regulators each one delivering + or - 17V, so each channel is independently powered.
Output DC-voltage was somewhere between 1.5mV and 3.5mV, depending a lot of the op-amps used and the burn-in time (usually after 20 minutes the DC-voltage could get lower). However, few mV are normal and pretty common with most amplifier, hence I consider this amp can be used with IEMs as well, especially that the background noise is even lower than PLAY's internal amplifier.
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