Tone 2 Pro firmware (1.41) is borderline overheating

Audio
1

Anyone else noticed?

It used to run hot on previous firmwares but nothing concerning. With 1.41 its almost too hot to touch for longer than than a few seconds which is pretty concerning considering how little power it should be drawing.

Its even warming up the 2cm thick desk it sits on. On previous firmwares it would just mildly warm the surface near it. I know this is anecdotal but its still alarming to me.

I am dissapointed how quick you guys have abandoned development for it.

At least i think this issue should be checked out.

2

Hi
The Power consumption of Tone2 Pro is shown below the following picture.It has 3W maximum power.
The different firmware can not affect the consumption.

Tone2 Pro power
Tone2 Pro power541×515 52.9 KB

We had tested for half an hour when play PCM768 at maximum volume with 600ohm 3.5mm headphone,the temperature of the enclosure raised from 27℃ to 38℃.Can I check some message following with you?

  • Do you plug both 3.5mm headphone and 4.4mm headphone？
  • What is the impedance of your headphone？
  • What is the temperature of your environment？
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3

Hi
I have tested the consumption of two tone2 Pro with V1.3 and V1.41 firmware.The reasult is that the power of V1.41 is a little lower than V1.3.You can check our report about this.In order to get the stable power,I use tone2 pro to play 1kHz 0dB sine wave.

Tone2 Pro#1 V1.41 V1.3
Sample rating(KHz) Power voltage(V) Power current(A) Power(W) Power voltage(V) Power current(A) Power(W)
44.1 5.09 0.42 2.1378 5.09 0.46 2.3414
48 5.09 0.42 2.1378 5.09 0.47 2.3923
88.2 5.09 0.43 2.1887 5.09 0.47 2.3923
96 5.09 0.44 2.2396 5.09 0.47 2.3923
176.4 5.09 0.45 2.2905 5.09 0.48 2.4432
192 5.09 0.46 2.3414 5.09 0.49 2.4941
352.8 5.09 0.51 2.5959 5.09 0.54 2.7486
384 5.09 0.51 2.5959 5.09 0.55 2.7995
705.6 5.09 0.55 2.7995 5.09 0.58 2.9522
768 5.09 0.56 2.8504 5.09 0.59 3.0031
Tone2 Pro#2 V1.41 V1.3
Sample rating(KHz) Power voltage(V) Power current(A) Power(W) Power voltage(V) Power current(A) Power(W)
44.1 5.09 0.41 2.0869 5.09 0.45 2.2905
48 5.09 0.42 2.1378 5.09 0.46 2.3414
88.2 5.09 0.42 2.1378 5.09 0.46 2.3414
96 5.09 0.42 2.1378 5.09 0.46 2.3414
176.4 5.09 0.435 2.21415 5.09 0.47 2.3923
192 5.09 0.44 2.2396 5.09 0.47 2.3923
352.8 5.09 0.49 2.4941 5.09 0.53 2.6977
384 5.09 0.5 2.545 5.09 0.535 2.72315
705.6 5.09 0.54 2.7486 5.09 0.57 2.9013
768 5.09 0.55 2.7995 5.09 0.58 2.9522

If your result is different from us,I think there maybe something wrong with your hardware or your firmware.Could you send it to us to check?

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