Drop + THX AAA™ 789 Linear Amplifier
Drop + THX AAA™ 789 Linear Amplifier
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Product Description
Announced at CES 2018, the Drop + THX Achromatic Audio Amplifier (THX AAA™) 789 is a linear bipolar amplifier with feed-forward error correction. It’s designed for objectivists who appreciate an incredibly clean, transparent amp—the sought-after “wire with gain” whose amplification is wholly uncolored by a sound of its own Read More

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Kevin
4693
Outreach
Dec 3, 2020
Stickied
Locked
For updates about when this product is shipping, please refer to our pre-order status update thread.
eakilicarslan
1
Jan 9, 2021
What is the reason for the initial start up procedure for the amp? Gain knob at 1 and volume knob at 0 before powering on for the first time? I forgot to do this and my unit seems to be fully functional? Did I mess anything up not doing this?
YCatpower
12
Jan 5, 2021
Anyone ever tried outputting from all three ports? XLR + 1/4 + 1/8 at the same time?
KristianN
76
Jan 13, 2021
I have tried to use the balanced and the 6.35 mm and they both work at the same time. Did not plug anything in the 3.5mm due to the difference in efficiency between my IEMs and the planar headphones I used with XLR and 6.35mm
glkparanoid
0
Jan 3, 2021
Tempted by Adorama promoting HE6 SE V2 at 699. Can this amp drive the HE6 properly?
Eli38
54
Jan 1, 2021
I paid $400 a year ago. Why is it $100 cheaper than the original version before Drop's one?
postwarscars
621
Jan 2, 2021
Technically it's $50 cheaper than the original price. I bought it at $400, too, but it had run a few times already prior to that at $350. In all honesty, it was still a good buy at $400, it's just an excellent buy at $300 now. They probably were able to source production more effectively, would be my guess. That, and competition in the space got much closer, which wasn't the case when the 789 was released.
iMongui
22
Dec 30, 2020
Still looking for one of this wonderful device here in Spain, the tax prices are overkilling me and things like A90 and similars are near to twice the price, this one fits perfect with what I need but well, just sold there in US... Any idea?
JSB73
20
Dec 31, 2020
Check this: https://www.monoprice.eu/collections/receivers/products/monolith-by-monoprice-thx-aaa-balanced-headphone-amplifier-featuring-thx-aaa-887-technology-eu-uk The Monolith is slightly better measured than the Drop, but otherwise the two amps are practically twins. Check with the support about taxes, but I think that there should be no additional payments, since the shipment is from the EU.
fartarim
0
Dec 29, 2020
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b.lian
2
Dec 28, 2020
I received my unit in mid-December. Left channel gain is clearly down. Has anyone had the same issue? I’ve just reached out to Drop Support.
Lmvrtinez
7
Jan 4, 2021
most Amps have channel imbalance at low volume levels. You need to have it on the lowest gain level that allows you to reach listening volume. If your volume knob is close to 12 o clock, and you’re still having this issue then it’s a defective unit. (Assuming source and cables are okay).
dr_jac
18
Dec 18, 2020
Anyone who uses 789 with any of Schiit's Multibit DACs?
verifonix
1014
Jan 9, 2021
Sure. Works great.
Rhythmdevils
0
Dec 11, 2020
Does anyone know the polarity of the DC Plug going into this amp? Positive on the inside or outside? I’m having a Sigma 11 linear power supply made for it :) if you could also confirm that it takes 24v/1.8A that would be much appreciated. thank you !
JSB73
20
Dec 12, 2020
DC plug polarity: (+) inside, (-) outside. The amplifier requires 24V / 1.78A. Check the image in the upper right corner: https://www.audiosciencereview.com/forum/index.php?threads/tear-down-of-massdrop-thx-aaa-789-headphone-amp.5327/post-117913
verifonix
1014
Dec 26, 2020
nice find.
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