- Aug 29, 2019
2*10^(14/20)=10 so you will get 10Vrms output with 2Vrms input and gain set to +14dB.
Do I want A30Pro or A90 for HD800s? The price is roughly the same.
I have 4.4mm balanced cable
I plan to just get D10 balanced to pair with it
It will be plenty fine, specially if you input a balanced signal.Would the A30pro be sufficient for driving the HE6SE v2 with eq, or should I get the A90? I would prefer to get the A30pro as I can place it on top of my SMSL SU-9n while the A90 would need to be placed somewhere else.
Here's the max voltage vs load graph for both:Would the A30pro be sufficient for driving the HE6SE v2 with eq, or should I get the A90?
E50 with TRS to XLR cables will give full power.Would I be able to run this amp with full output power (excuse my layman terminology ) using the balanced outputs from an E50 DAC with a TRS to XLR cable? Or is the matching D30 pro DAC with XLR cables required for full power?
I want to use the A30 Pro and a balanced DAC (SMSL SU-8s) with EQ and an IEM. In EQ I'll be using a pre-amp gain of -9dB to avoid clipping, which would result in the DAC outputting ~1.42Vrms to the A30Pro instead of 4Vrms. The IEMs impedance is 22 Ohms. Using these formulas, the output should be:2*10^(14/20)=10 so you will get 10Vrms output with 2Vrms input and gain set to +14dB.
The SU-8s via XLR has an output voltage of 4.05Vrms.Is this correct?
O OK Thank You very much.The SU-8s via XLR has an output voltage of 4.05Vrms.
With a preamp of -9dB that's 4.05*10^(-9/20)=1.44Vrms.
Amplified by the A30Pro in High gain you get 1.44*10^(14/20)=7.22Vrms.
To calculate power from impedance and voltage, do Vrms^2/Ω:
->that much power will kill any IEM.
I too had same DC protection with my a30pro.OK, very strange. After further investigating, it only happens with a specific song. And only at a certain volume (about halfway on the knob, medium gain). It shuts off after that point and will keep power cycling itself. If I back the volume down, it will stop power cycling and stay on. Here's a video:
The fact that it's only one specific track that's doing it makes me think it may be a negative reaction to DC offset? My interface is infact DC coupled (Ultralite AVB), so if a source recording does have DC components, they'll make it out of my interface intact. Is the Topping's front end getting overloaded past a certain gain point with DC present? Here's the track in question if anyone wants to play around themselves, it's completely unmodified from CD source material (other than lossless FLAC compression of course). Any DC present was in the source recording: https://fohdeesha.com/data/other/05 - Blue Light (Engineers 'Anti-Gravity' Mix).flac
EDIT: Confirmed that the above track has nearly 4 volts of DC offset, assuming your interface puts out around +20 dBu at 0dbFS. Playing that back through *any* amp is probably not the best idea, and Bloc Party needs to fire their mastering engineer