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Drop + THX AAA 789 Linear Headphone Amplifier - Desktop Amp with Balanced XLR and Single-Ended RCA Inputs

    • Based on 224 reviews
Condition: Used - Good
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$315.80 Why this price?

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Availability: Only 1 left in stock, order soon!
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Arrives Tuesday, May 21
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Features

  • The Worlds Most Linear Amplifier Announced At Ces 2018, The Drop + Thx Achromatic Audio Amplifier (Thx Aaa) 789 Is A Linear Bipolar Amplifier With Feed-Forward Error Correction
  • Fatigue-Free Listening Made In Collaboration With Thx Ltd , It Features The CompanyS Groundbreaking Thx Aaa And Feed-Forward Topology, Which Reduce Distortion By 20 To 40 Db For Realistic, Fatigue-Free Listening.
  • Thx Aaa Technology Capable Of Driving Any Headphones, Including High-Impedance, High-Current, And High-Sensitivity Types, The Thx Aaa 789 Amp Transmits The Original Audio In Its Purest Possible Form.
  • Additional Features Each Channel Of The Thx Aaa 789 Amp Is Equipped With A Low-Bias Class-Ab Main Amplifier And An Auxiliary Error-Correction Amplifier, The Former Providing The Majority Of The Power And The Latter Providing A Realtime Low-Power Error-Correction Signal.

Brand: DROP


Color: Black


Compatible Devices: Desktop


Material: Aluminum


Output Wattage: 6 Watts


Product Dimensions: 8.3 x 9.1 x 2.2 inches


Item Weight: 3.4 pounds


Item model number: DROP + THX AAA 789


Date First Available: September 23, 2019


Manufacturer: DROP


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews

    • FANTASTIC sound
Review Image by Curtis E. Creech Curtis E. Creech
I'm not going to say that this amp somehow changes the sound of music as if blessed by God's chorus of angels themselves. What it does, it does VERY well. I have a Cambridge Audio DACMagic Plus running to this with Amazon Basics balanced cables, and USB from my laptop. It is powering a pair of Sennheiser HD650 headphones, the modern equivalent of which is also available from Drop. I paid $400 for these headphones a decade ago, and I think they go for about $220 from Drop. I had previously used an integrated amp solution from Peachtree Audio, the Decco2 - also using USB from my computer. That Peachtree amp uses a (bypassable) tube input stage and class A headphone output. I was never really impressed by the sound of my headphones from that amp though...I mean, it sounded good, but it was missing something. I bought a $900 pair of Bowers & Wilkins P9 as a replacement...that's how much I thought was missing. But now, through this combo of Cambridge Audio DAC and Drop + THX AAA 789 headphone amp, I am really quite pleased with the sound! It sounds REALLY good. In fact, I think the Sennheisers sound BETTER in this combo than the B&W P9s (the reverse was true with the Peachtree)! That's right... $220 headphones now sound BETTER than a $900 pair, at least to me. This entire combo, Sennheiser HD6xx, Cambridge Audio DAC Magic Plus, and Drop + THX AAA 789, would cost about $900 today, or MUCH less than the $1400+ I paid for the Peachtree and Sennheiser combo a decade ago. That $900 could be reduced further by getting a less expensive, but still very high quality DAC, such as those from Topping, Schiit, and others, that can be had from $50-250+ (sky's the limit on DAC prices - up to tens of thousands of dollars...serously, though diminishing returns occurs the higher you go, as with all audio). This amp is a no brainer, if you ask me, and very highly recommended for those who demand high quality audio! ... show more
Reviewed in the United States on May 9, 2020 by Curtis E. Creech Curtis E. Creech
    • Two Years of Constant Use, I Find Criticisms Of Sterility Valid
(Positive) +Lots of Power +Excellent Noise Floor (Neutral) +/- Clean Sound +/- Balanced (Negative) - Build Quality Questionable - Volume Potentiometer - Short warranty I've used my 789 for thousands of hours at this point. This was my first high-end amplifier, and initially, I was very pleased with my purchase. As a benchmark of good clean sound, the 789 is pretty much the gold standard. This is quite literally a double-edged sword, the 789 is so clean it seems to lack soul. I don't mean it in a bad way, it is just incredibly clean. Maybe too clean. It drives everything I've used with it very well, the build quality is meh, the buttons are not the nicest, and the volume potentiometer is unreliable. A potential fix to the potentiometer is to leave it at 100% volume and adjust line levels accordingly. The case doesn't sit totally flush. None of these things have impacted operation, but at this price, they shouldn't have these flaws which seem common according to other critical reviews. ... show more
Reviewed in the United States on January 16, 2022 by Robert R.
    • The sound, build, flexibility and value are superb.
I have a Schitt head amp and an Ayre Codex, but neither offers an XLR 4 pin headphone connection. Most of my headphones are terminated in 4 pin so I had to use adaptors for my other amps. That is a pain. I liked the looks of the 789 at first glance because, among its other features, it has an XLR headphone connection. Then i began to notice that some reviewers that I trust either had one on their desk or referred to the 789 in reviews of other products. I was curious. Given the price, I bought one. I still can't believe how quiet, transparent and resolving it is. Both the "balanced" and the RCA outputs provide stunning clarity. I love it. After 9 months, a few changes in interconnects and USB cables. I am literally amazed at the sound that I am getting. I think this is an incredible value. I took a USB cable that sounded a bit edgy in my main system, and it actually improved the sound of my desktop system, without a hint of the glare I had been hearing in my other system. This makes no sense to me, but it illustrates that character and tone can be affected by the wires you connect your dac with. Full disclosure, I should mention that I added and AudioQuest Powerquest 3 power conditioner, and it is probably a combination of the two items. The point is, it sounded good out of the box, but with a few tweeks it is even more enjoyable. Great buy. ... show more
Reviewed in the United States on August 23, 2020 by Stanfx
    • Exactly what I hoped it would be
I'll try not to waste a lot of words here, audiophile or otherwise. I'm not normally a headphone listener, but I have recently had to switch to headphones from my speaker system for a lot of my listening. I tried using the headphone output on my otherwise great Onkyo c-7030 CD player, and it was quite a disappointment in a number of ways. But that is not surprising because such headphone outputs on consumer audio gear are just a cheap add-on feature. So I sought a headphone amp. My criteria is I want to hear every bit of information that is on the CD and nothing that isn't. Being familiar with the sound of Neve headphone channels in studio mixing boards, I was attracted to the Rupert Neve headphone amp available as a discrete unit. I had confidence this would give me what I want. However it is pretty expensive, so I checked as many reviews I could find, and for $180 less than the Rupert Neve box, this Drop+THX AAA 789 appeared to be sonically the same, so I took the risk of trying it, and while I have no way to A/B it with the Neve it satisfies what I wanted from it 100% and I don't imagine I will be thinking I need anything better. As long as it holds up long term, I will think of it as as good of a headphone amp as I could ever want, at the lowest price I could ever expect to pay for this class of sound. ... show more
Reviewed in the United States on July 2, 2020 by Rick Clark

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