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Review and Measurements of Massdrop THX AAA 789 Amp
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dsnyder0cnn
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Let me measure the power draw from the SMPS while the amp is off. It's probably very small, but I'll let you know what I see (for US 120V)Hi
Brought this beast! Looks very solid, sound as well
Should I plug off it from power (green diode always on when plugged to socket) ?
fieldcar
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Did anyone see the dumpster fire of hate going on on reddit? It reminds me of why I don't go on there anymore.
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Similar, but mine now makes some nasty noises if the phones are plugged in and I bounce the volume dial off the bottom (far anti clockwise). Not sure what that is but avoiding it is easy.
Actually, if you pay attention to the upvotes, you'll see it's not a dumpster fire of hate.
But there are, of course, more subjectivist trolls than you'll find here. And they are very loud.
Veri
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What is that image even
some idiot pouring water over his amp in the sink....
isn't that how one retrieves those "liquid mids"?
Maybe it was sounding too dry for his taste. If he likes soap operas they shall sound even cleaner now...
Veri
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edahl
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It's trivial identity formation. People who think purchasing decisions are a personality cannot bear the thought that the entire basis of their identity can be reduced to a $200 amp available on drop. You see this sort of thing in any hobby with a strong gear acquisition element.
Let me practice my bad jokes on a foreign language (foreign for me)"He's not a clown, he's the entire circus"
eh, HPA-4 is more than just a headphone amp, but I feel you. I've got both.Beats the heck out of spending 10x more for a Benchmark HPA4 with only marginally better performance and the same or less output power.
Quick question here. I have a THX AAA 789 and a pair of OG HD800s which came with unbalanced cable. I see a great deal more power is available through the balanced outputs than the unbalanced, and I'm wondering if I could tap into that by simply using a balanced to unbalanced cable adaptor or whether I would have to buy an actual 4 pin XLR balanced HD800 headphone cable which is obviously quite expensive. Sennheiser is selling its cable for $375 which is more expensive than this amp which as we know has been priced as low as $200.
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No- you cant plug an unbalanced cable into a balanced amp output with an adapter. You CAN plug a balanced cable into an unbalanced amp output with an adapter.
You can get aftermarket balanced HD800 cables all over ebay/ Ali etc for far far less- just make sure seller / product gets good reviews and lots of them.
Or just use the 1/4 inch output on the 789 which will more than power the HD800
EDIT- looks like you are getting solid answers on this on the HD800 thread.
Last edited:
kingofthecrate
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audiophile spring water will really help with taming the mid punch
Shoaibexpert
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Seems like after 3 years, one of my THX 789 capacitors is swelling up and needs replacement. Any idea what is the part number I can use to reorder them? I know it's Rubycon.
Also, the pot seemed to be quite scrathy and was making noises so I put in some WD40 only to find it shouldn't be used . Any idea if the pot can be fixed at all or cleaned?
Thanks
Also, the pot seemed to be quite scrathy and was making noises so I put in some WD40 only to find it shouldn't be used . Any idea if the pot can be fixed at all or cleaned?
Thanks
It should be this.
16PX3300MEFCG412.5X20
16PX3300MEFCG412.5X20 Rubycon | Capacitors | DigiKey
Order today, ships today. 16PX3300MEFCG412.5X20 – 3300 µF 16 V Aluminum Electrolytic Capacitors Radial, Can 2000 Hrs @ 105°C from Rubycon. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
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