So, I’m not an expert in electronics in any sense of the word but I didn’t see any real specifications on this stereo mixer so I did some for those who want to know. Overall the product is built well and feels solid. The volumes are a little scratchy as others have said but not a deal breaker. However, if you are looking for low-end bass don’t expect too much. I got roll-off starting at about 100Hz and goes down from there, see images. My guess this is the way they are filtering out 60hz buzz, using a high-pass filter and not a notch filter or something like that. On the other hand if you want to play audio for Dogs and Bats you are in great shape! As my tests show this mixer doesn’t start rolling off until you get past 60kHz and is still going at 98kHz, crazy! :) I didn’t take measurements between when I realized there was no point. The left and right volumes track nicely so you shouldn’t get a different volume between left and right. But it seems the potentiometers are not mounted to the chassis. It seems they are only mounted to the PCB so any stress on them could damage the connection to the PCB. I also did a simple gain test. With a 100mV sign wave input and the scope set to 1V scale I got about 1Vpp out at max volume on each channel and no clipping. As a cheaper mixer goes its not too bad from what I can tell. Hope this helps others.
Lower end roll-off:
(input set to 300mV sine wave volume on mixer at half)
Freq=99Hz Vpp=600mV Scale=200mV
Freq=50Hz Vpp=424mV Scale=200mV
Freq=33.7Hz Vpp=408mV Scale=200mV
Freq=20.8Hz Vpp=224mV Scale=200mV
Freq=10.6Hz Vpp=144mV Scale=200mV
All channels tested about the same.
Upper end roll-off:
(input set to 300mV sine wave volume on mixer at half)
Freq=8kHz Vpp=656mV Scale=200mV
Freq=59kHz Vpp=656mV Scale=200mV
Freq=98kHz Vpp=536mV Scale=200mV
Gain with input set to 100mV:
Freq=100Hz Vpp=800mV Scale=1V
Freq=1kHz Vpp=1.12V Scale=1V
Freq=20kHz Vpp=1.04 Scale=1V
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So, I’m not an expert in electronics in any sense of the word but I didn’t see any real specifications on this stereo mixer so I did some for those who want to know. Overall the product is built well and feels solid. The volumes are a little scratchy as others have said but not a deal breaker. However, if you are looking for low-end bass don’t expect too much. I got roll-off starting at about 100Hz and goes down from there, see images. My guess this is the way they are filtering out 60hz buzz, using a high-pass filter and not a notch filter or something like that. On the other hand if you want to play audio for Dogs and Bats you are in great shape! As my tests show this mixer doesn’t start rolling off until you get past 60kHz and is still going at 98kHz, crazy! :) I didn’t take measurements between when I realized there was no point. The left and right volumes track nicely so you shouldn’t get a different volume between left and right. But it seems the potentiometers are not mounted to the chassis. It seems they are only mounted to the PCB so any stress on them could damage the connection to the PCB. I also did a simple gain test. With a 100mV sign wave input and the scope set to 1V scale I got about 1Vpp out at max volume on each channel and no clipping. As a cheaper mixer goes its not too bad from what I can tell. Hope this helps others.Lower end roll-off:(input set to 300mV sine wave volume on mixer at half) Freq=99Hz Vpp=600mV Scale=200mV Freq=50Hz Vpp=424mV Scale=200mV Freq=33.7Hz Vpp=408mV Scale=200mV Freq=20.8Hz Vpp=224mV Scale=200mV Freq=10.6Hz Vpp=144mV Scale=200mVAll channels tested about the same.Upper end roll-off:(input set to 300mV sine wave volume on mixer at half) Freq=8kHz Vpp=656mV Scale=200mV Freq=59kHz Vpp=656mV Scale=200mV Freq=98kHz Vpp=536mV Scale=200mVGain with input set to 100mV: Freq=100Hz Vpp=800mV Scale=1V Freq=1kHz Vpp=1.12V Scale=1V Freq=20kHz Vpp=1.04 Scale=1V
Images in this review
Top reviews from the United States
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Reviewed in the United States on June 9, 2019
Lower end roll-off:
(input set to 300mV sine wave volume on mixer at half)
Freq=99Hz Vpp=600mV Scale=200mV
Freq=50Hz Vpp=424mV Scale=200mV
Freq=33.7Hz Vpp=408mV Scale=200mV
Freq=20.8Hz Vpp=224mV Scale=200mV
Freq=10.6Hz Vpp=144mV Scale=200mV
All channels tested about the same.
Upper end roll-off:
(input set to 300mV sine wave volume on mixer at half)
Freq=8kHz Vpp=656mV Scale=200mV
Freq=59kHz Vpp=656mV Scale=200mV
Freq=98kHz Vpp=536mV Scale=200mV
Gain with input set to 100mV:
Freq=100Hz Vpp=800mV Scale=1V
Freq=1kHz Vpp=1.12V Scale=1V
Freq=20kHz Vpp=1.04 Scale=1V
Some basic specifications and review
By inclw on June 9, 2019
So, I’m not an expert in electronics in any sense of the word but I didn’t see any real specifications on this stereo mixer so I did some for those who want to know. Overall the product is built well and feels solid. The volumes are a little scratchy as others have said but not a deal breaker. However, if you are looking for low-end bass don’t expect too much. I got roll-off starting at about 100Hz and goes down from there, see images. My guess this is the way they are filtering out 60hz buzz, using a high-pass filter and not a notch filter or something like that. On the other hand if you want to play audio for Dogs and Bats you are in great shape! As my tests show this mixer doesn’t start rolling off until you get past 60kHz and is still going at 98kHz, crazy! :) I didn’t take measurements between when I realized there was no point. The left and right volumes track nicely so you shouldn’t get a different volume between left and right. But it seems the potentiometers are not mounted to the chassis. It seems they are only mounted to the PCB so any stress on them could damage the connection to the PCB. I also did a simple gain test. With a 100mV sign wave input and the scope set to 1V scale I got about 1Vpp out at max volume on each channel and no clipping. As a cheaper mixer goes its not too bad from what I can tell. Hope this helps others.By inclw on June 9, 2019
Lower end roll-off:
(input set to 300mV sine wave volume on mixer at half)
Freq=99Hz Vpp=600mV Scale=200mV
Freq=50Hz Vpp=424mV Scale=200mV
Freq=33.7Hz Vpp=408mV Scale=200mV
Freq=20.8Hz Vpp=224mV Scale=200mV
Freq=10.6Hz Vpp=144mV Scale=200mV
All channels tested about the same.
Upper end roll-off:
(input set to 300mV sine wave volume on mixer at half)
Freq=8kHz Vpp=656mV Scale=200mV
Freq=59kHz Vpp=656mV Scale=200mV
Freq=98kHz Vpp=536mV Scale=200mV
Gain with input set to 100mV:
Freq=100Hz Vpp=800mV Scale=1V
Freq=1kHz Vpp=1.12V Scale=1V
Freq=20kHz Vpp=1.04 Scale=1V
Images in this review
Reviewed in the United States on July 9, 2019
Reviewed in the United States on February 29, 2020
