Question 1

788 vs 789?

Accepted Answer

788 has more features, is truly balanced, includes a balanced DAC, is cheaper, and is wrapped into one box.

789 has lower noise/distortion, is truly analog, and has much more output voltage.

The 789 is objectively a better amp, however for most people the 788 is a better choice. The difference in noise is basically inaudible, the 788 is still miles ahead of most amps. The 788 includes a solid balanced DAC and is truly analog while the 789 isn't technically truly balanced, and you'd need to buy a balanced DAC (or a DAC period) to use it. It also includes a lot of great features like parametric EQ and Sensurround. The 789 has almost substantially more output voltage however - but the 788 is still plenty for most people. Unless you're driving HE-6 or 600ohm cans you're not going to need the extra power more than likely. The 789 is also truly analog whereas the 788 converts the signal to digital and then back to analog to enable the EQ and other features it has.

There's pros and cons to both.

Again, the 789 is objectively better in almost every way, however I think the 788 is a better solution for most people as you're probably never going to HEAR an actual difference.

If you want the best of the best, you can actually get your hands on one, and you don't mind spending another 200-300 on a balanced DAC, go with the 789. Only if you just really want/need to squeeze out every last drop you can.

If you want to buy one box and be done with it for a lower price, want EQ features, and aren't desperate for the extra power, go with the 788. It's a better value and is the right choice for 90% of people. It's an amazing package all wrapped up into one so that you don't have to do the leg work.

Both are amazing and you're not going to be unhappy with either.

Question 2

Why is this amp not  recognized by my ps4 pro ? i have gone over tall the ps4 audio settings, and the the amp/dac settings and can't get any audio ?

Accepted Answer

If you're using the USB cable then it might require drivers for it, the ps4 won't have ASIO driver I'm not sure it's a driverless dac like the O2 dac's. That being said you should be able to use a an optical cable from ps4 to this amp/dac or use rca from the tv to it, just not the usb port to ps4. Hope this helps.

Question 3

Does the supplied power plug support 240V?

Accepted Answer

yes it is

Question 4

Can I add another amp like the Topping A90 into this device?

Accepted Answer

it's already an amp/dac but if you like to use the a90 for amp you can also.

ASIN	B07KQW1WFX
Customer Reviews	4.6 4.6 out of 5 stars (240)
Date First Available	November 21, 2018
Item Weight	5.1 ounces
Item model number	124459
Product Dimensions	7.8 x 2 x 8.7 inches

Monolith Desktop Headphone Amplifier and DAC with THX AAA Technology (Dual AKM 4493 DACs & Dual AAA-788 Modules)

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