Ralf Stocker
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Any photos from the inside?
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Monoprice Monolith THX 887 Balance Headphone Amp: New Champ?
- Thread starter amirm
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Like Ralf asked already, I would love to see some guts from inside, close-ups if possible.
This is a real wire with gain indeed, hope the internals will not disappoint us in any way (like not marked opamps and black traces on black PCB, 'cause this means it's hard to repair).
Thank you!
This is a real wire with gain indeed, hope the internals will not disappoint us in any way (like not marked opamps and black traces on black PCB, 'cause this means it's hard to repair).
Thank you!
maxxevv
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Good question!
But it also depends on whether the output numbers are being dominated by noise or dominated by distortion. If its dominated by noise, then a higher voltage would give a better reading, the reverse being true if its dominated by distortion.
THX 789 :
THX 887:
If we look at purely the SNR figures, supposing the 789 is at 5.8V :
And the 887 is at 3.9~4V:
The SNR figures being essentially identical give and take measurement fluctuations, the 887 seems to have a better SNR figure.
BUT, as you pointed out, the gain modes are not the same, so there in lies the 'unknown'.....
Last edited:
Seems that we're comparing 5.8V RMS with 4V RMS; perhaps a new 4V RMS measurement will lower the background noise a little bit and lower the harmonics too. However, both units are wires with gain, nothing to complain for sure.
I guess this is the background noise, if I understand the graph correctly:
Pic was grabbed from https://www.monoprice.com/product?p_id=39359 .
Pop the hood!
Oh it's vs time! 0.8uV. Alright. Well done.I guess this is the background noise, if I understand the graph correctly:
Pic was grabbed from https://www.monoprice.com/product?p_id=39359 .
Don't worry. It won't be available until late October.
Can we get a spectrum of 4V into 32ohm? 0.5W
astr0b0y
Active Member
What amazing results, thanks for the review Amir. I’m hoping Monoprice also send you their upcoming pre-pro for testing.
maxxevv
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Its not an audible concern unless there are some major topography differences., which is not likely. No difference really if one already has the 789, as mentioned, its really just an alternative, equivalent amp to the 789 at an equivalent price and maybe slightly different aesthetics.
Not a "better amp at any price" thing anyway.
Only annoyance is that it can't be used as a preamp... The Benchmark is also preamp with balanced outputs. The JDS Atom is also a preamp but with single ended output.
The real advantage with the monoprice version, (IMHO they're the same) , is that you can return if you happen to not like (unlikely
). THe prices being the same too.. I would go with the Monoprice.
The real advantage with the monoprice version, (IMHO they're the same) , is that you can return if you happen to not like (unlikely
). THe prices being the same too.. I would go with the Monoprice.
You can certainly use it as a preamp. And a more than capable one. Just you need to unplug your headphones.
True but you have to make/find some new cables/adapters... then unplug/plug cables every time you want to use your speaker system... that can become quickly a major annoyance.
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