Recent content by gfx_1

  1. gfx_1

    Chapeau ou non? (PCM5102MK non-HAT DAC review)

    Thanks for measuring. I use cheap hat with an optical and coax digital output on a Raspberry Pi 3B. That should keep the noise down a bit.
  2. gfx_1

    AIYIMA A70 Stereo Amplifier Review

    Subwoofers have settings for frequency range and relative volume. It works fine. The stereo output gets the full range.
  3. gfx_1

    Marantz CINEMA 70s AVR - Teardown, personal thoughts and a few measurements

    If you turn it off it uses less energy, most AVR have a little powersupply so that the remote power-on works and then pull a relay for the main transformer. Masterswitches work fine older AVR's had a supercap to keep the settings when complety powered off. I used one for all my AV stuff because...
  4. gfx_1

    Aiyima A8 Mini Amplifier Class D "Subjective review"

    Yes I used some multicleaner (Loctite 8201) the potmeter seemed closed but it is quiet again. Also found a can of philips contactspray from the seventies in my parents house. The knob has red LEDs behind it, if you can´t see them pull it a little bit forward.
  5. gfx_1

    Amir's 2023 Pacific Audio Fest Report

    I'm still wondering what kind of cable is on the other side of the power outlet. Standard Romex?
  6. gfx_1

    Aiyima A8 Mini Amplifier Class D "Subjective review"

    Speaker makes noises when turning the knob, bit the same as an amp from the seventies with cheap rotating resistor. I will try cleaning it.
  7. gfx_1

    Aiyima A8 Mini Amplifier Class D "Subjective review"

    The volume control knob of the A8 is now noisy. :(
  8. gfx_1

    Topping E50 Coaxial Drop Out issues

    Replaced the powersupply of the Raspberry pi with a newer phone charger. Did improve coax issues a bit but still dropouts then put the powersupply of the Aiyima A8 in a powerstrip with netfilter (24 euro) https://www.amazon.de/-/nl/dp/B000NI80OW Together this works.
  9. gfx_1

    Topping E50 Coaxial Drop Out issues

    When powering the D50s from a powerbank the coax issue remains. Tried an other coax source, with the coax output from the IOTAVX NP3 (cd-player/dab/streamer) it keeps working. So it might be the coax output from the raspberry pi. I'll try a new powersupply for that then.
  10. gfx_1

    IOTAVX SA3 Stereo Amplifier Review

    It is just a yellow/green wire between the chassis earth next to the phono input and the earth of the powerstrip you might not need it. I used a crimp on spade connector on one side and a 3-prong grounding plug on the other with only the earth connected. There is probably some code somewhere...
  11. gfx_1

    I just Fried fairly expensive AVR which is NOT mine

    I shorted the output of a Marantz PM5004 once and the volume knob went automatically down to zero. That one was around 200 euro but never tested it with 2 Ohm.
  12. gfx_1

    Topping E50 Coaxial Drop Out issues

    My Topping D50s has coax issues now, it worked flawlessly before but when I turn on the amplifier it loses it's signal (unlock). The optical, BT and USB input all work fine. The raspberry pi which feeds it (hifi berry clone) works oke. Conclusion so far is that it doesn't like the power supply...
  13. gfx_1

    PS Audio PowerPlant 3 Review

    For less money you can get an online UPS like AEG Protect 1000/2000/3000 which creates a reasonable sinus but now idea how these measure.
  14. gfx_1

    AIYIMA A08 Pro Amplifier Review

    The Aiyima A8 has the same case but only a volume knob in the middle.
  15. gfx_1

    Aiyima A8 Mini Amplifier Class D "Subjective review"

    I made a switchbox from a sturdy 2-way 4-pole switch and stuff I had laying around to compare two amplifiers on one set of speakers. Both are fed from the same source. The class A/B amplifier which I really like can play louder but for desktop use (60 dB according to the dB app on the phone) the...
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