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Zoom H4 - ASIO via USB2 - on WIN7
I finally managed to get some stability using a Zoom H4.
If these comments and tips help anyone - great!

Hardware setup:
  • on old H4 portable recorder (2 integrated microphones and 2 XLR line imputs)
  • an old laptop running WIN7
  • USB2 cable to link H4 to the laptop
  • headphones connected to H4 (well obviously)

H4 Firmware and Drivers
  • mine was running Ver-1 firmware which does not operate ASIO
  • it needs an upgrade to Ver2.4 which was downloaded from Zoom site
  • to upgrade, place the 'system.bin' file in the root directory of the SD card (that is inside H4)
  • power up H4 with an external power supply and while pressing the round MENU button down
  • ASIO driver is also downloaded from the Zoom site and installed on the laptop
  • here is a tip, if the driver does not install at first, try installing it in a compatibility mode
  • to do this > right click on the driver file > click Properties > select 'Compatibility' tab > select a compatibility mode e.g. XP or Vista
J-K Setup
  • if the H4 does not pass J-K latency test at first, click 'Tweaking ASIO Device Parameters' - a link below some notes on the right of the window
  • open ASIO Control Panel (can also be opened by MANAGE > AUDIO PROPERTIES > CONFIGURATIONS > ASIO...
  • adjust latency on ASIO to 10mSec (mine was set to 2msec and was failing J-K latency tests until I adjusted it to 10mSec)
  • at that stage everything was 'smooth sailing'
  • use 44kHz as the sampling rate
  • in 'next steps' of the J-K setup process, choose audio inputs (microphones in my case) and outputs (Line / Headphones)

That's it - hope it works for you too!
Cheers, Lex

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Zoom H4 - ASIO via USB2 - on WIN7 - by Lex Music - 07-23-2020, 10:20 PM

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