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LYNEPAUDIO B049 Audio Switcher Review

amirm

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This is a review and detailed measurements of the LYNEPAUDIO B049, 6 input, 4 output active audio switcher. Unfortunately I can't find who sent it to me but it costs US $44.85
Lynepaudio B049 6 IN 4 OUT Audio Switcher Audio Source review.jpg

It is nice, solid case with an input selector that feels pretty good. The output switches are a bit mushy and hard to tell looking down what their setting is. Regardless, this is one heck of a package if it performs. Company specs seem to indicate so:

Product Parameters:
- Material: metal
- Color: black
- Interface: RCA interface
- Power supply: USB 5V supply power
- Input and output impedance: 10KΩ-50KΩ
- Frequency responding: 20Hz-20kHz
- Distortion: < 0.002%
- Output consumption: < 0.01dB
- Signal gain: 0dB
- SNR: > 98dB
- Input and output interface: standard RCA interface
- Input passageway: 6 sets stereophonic shift input
- Output passageway: 4 sets stereophonic switch select output (able to start at the same time or close independently)
- Control switch: 6 gears shift switch and 4 sets switches, accurately select the manually shift switch
- Input channels: 6 channels
- Output channels: 4 channels
- Net weight: 0.37kg/0.8 lb
- Product size: 162 x 63 x 38mm/6.4 x 2.5 x 1.5" (LxWxH)

Power is provided via USB-C and a cable is provided for that.

LYNEPAUDIO B049 Measurements
Here is our usual dashboard with 2 volts in:
Lynepaudio B049 6 IN 4 OUT Audio Switcher Audio Source Measurement.png

Oh boy. Negative excursion of the sine wave is clipped causing severe distortion. I thought if I lowered the input a bit, it would improve but it did not. So I ran a full sweep from 50mv up to 2 volts:
Lynepaudio B049 6 IN 4 OUT Audio Switcher Audio Source SINAD vs Level Measurement.png


The thing saturates at just 70 millivolts. There is no sense in testing more.

Conclusions
The specs indicate something that was measured so I had high hopes for it. These results are obviously terrible. Did they change the design? I guess it is possible this is a broken sample.

Naturally I can't recommend the Linepaudio B049. I am not going to create a poll as the outcome would be obvious.

If you are the owner, please contact me. :) I vaguely remember a conversation about it.

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As always, questions, comments, recommendations, etc. are welcome.

Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
 
just broken

1714202605001.png
 
There it is. The perfect tube-amp mod for "warm" sound.
 
Wow, we have seen bad results here, but I don't recall seeing the sinewave distorted so much that you don't even need to look at the rest of the dashboard. Thanks for preventing us from wanting to buy it @amirm

Btw, in one of his last videos Dave-eevblog talks about CD40xx logic, and even mentions briefly that they could be used for audio switching, but, meh, too much HD for audiophile level.
Is there something solid state, easy to implement, that could be decent results?
 
What if, instead of displaying products with poor ratings, we only presented those rated as excellent, great, or good enough? This would reduce the risk for reviewers, potentially avoiding legal action from product makers, and save time for potential buyers like us.

Thank you.

:):):):)
 
What if, instead of displaying products with poor ratings, we only presented those rated as excellent, great, or good enough? This would reduce the risk for reviewers, potentially avoiding legal action from product makers, and save time for potential buyers like us.

Thank you.

:):):):)
I suggest we need to hear about the bad-uns too.. Not sure of 'Gramophone' magazine ever came across the Atlantic on eastwards into Europe, but in addition tio valuable traditional rather than contempoary-music reviews, the revierws of the gear itself were always positive, the reason being that bad stuff was aborted and/or not published, which I didn't think did the reader full justice (the reviewers back then were good highly qualified ones generally, at least until the noughties I recall).
 
It is indeed likely that the unit is faulty, because if we stick to the specifications the SINAD should not be worse than about 74 dB. Amir's measurement shows a noise threshold low enough for the SINAD to be dominated by distortion (0.02%).
We should have a reaction from the manufacturer on this test, The fact of saturating so early is perhaps an indication of a malfunction of the device.
 
What if, instead of displaying products with poor ratings, we only presented those rated as excellent, great, or good enough? This would reduce the risk for reviewers, potentially avoiding legal action from product makers, and save time for potential buyers like us.

Thank you.

:):):):)
We can have a scale from

Great
Superb
Ultra Performant
Perfect+
Godlike performance

;) then no one can complain.

“Great” products may not immediately kill or maim the reviewer , thats the secret threshold for that ..
 
Why, why there is no listening test section? Would be way funnier than usual "good and better with EQ".
May appear also it's a nice overdrive/distortion guitar pedal:D

Voted for Great
 
Jokes aside it’s probably broken ?
+1, can be. Such results must be verified by second / different batch unit test. Just to be objective.
 
There it is. The perfect tube-amp mod for "warm" sound.

true believers of warmth will tell you that this one has to much of 3rd harmonics! :):)
 
Why have an active unit at all ? all its doing is switching ?
 
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