Pretty sure it is. This amp has so much negative gain in low gain mode that it suppresses the noise floor of the test signal substantially in the process.Is the method of measuring 50 mV SNR exactly the same as before? I thought the previous records hit the limits of the analyzer.
For example, WolfX-700 told measuring more than about 95 dB requires a low-noise amplifier:AP can theoretically resolve a few dB on top of this result too; the noise in this result is about 500 nVrms (although the actual number is likely lower, and the measurement is limited by the noise added by the AP's ADC).
Amir acknowledged the possibility of higher numbers through a low-noise amplifier when reviewing Pre90, but the method was not changed to keep consistency.Due to the noise floor of the AP itself, the DNR at 50mv can only be measured to around 95db. If this measurement reaches 95db, I will use a 40db low-noise amplifier to simultaneously amplify the noise floor and distortion of the device (in fact, it will deteriorate the measurement result)
Even if it has. Buy another one when it fails. You will still save money compare to the next best.I really hope this one doesn't have any widespread issues because it would be great if this could legitimately be the default recommendation for all headphones.
Time will tell.
Yes, Mr.Yang please tell those with 60Hz transformers, the value for an RC snubber(specifically the resistor value) across the secondary, to damp this ringing. This owner of L50 implemented an ad hoc RC snubber, but have no measurement to confirm when ringing of diodes switching is damped(subjectively noticed difference, as cleaner water taste different). Please implement a RC snubber for external transformer and/or post the values of the resistor to implement a correct RC snubber to stop ringing for 50/60Hz transformers. All diodes ring! Thanks for sharing serious audio engineering with us.A SMPS would actually cause more issue and higher mains frequency noise in a all single ended device. Current external transformer solution is the best solution for single ended applications.
So if I'm not mistaken, the RME ADI-2 DAC FS puts out 1.5 watts maximum power vs this unit at 3.5 watts? For $149 I might just let the RME do what it does best and let this little powerhouse handle the amplification.