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[Official Launch] ZP3 Balanced Preamp – Co-Created with the Community, Now Available (Exclusive ASR Discount Inside)

Fosi Audio

Fosi Audio

Senior Member
Audio Company
Joined
Sep 10, 2021
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Hi ASR members,

We’re thrilled to announce that the Fosi Audio ZP3 Preamplifier—a product shaped directly by your feedback（https://www.audiosciencereview.com/forum/index.php?threads/what-a-balance-preamplifier-should-be-like.47481/ is now officially live across our global platforms!

We’ve listened closely to the ASR and broader audio community through VOC(voice of customers) surveys, thread discussions, and emails. The ZP3 is the result of that dialogue: a flexible preamp built for real-world use and real user needs. Your voices have made a real difference.

Special Offer for ASR Members​

As a thank-you for your input and support, we’re offering an exclusive discount code for ASR members :

Use code ZP3ASR15 at checkout for a special launch 15% discount.
Click to expand...

Limited-time offer, valid on our official store, Amazon sites, and Aliexpress:
fosiaudio.com

Fosi Audio ZP3 Preamplifier

Home Audio Control Hub: Features 3-in-3-out options for connecting up to three audio sources. Includes a remote control for one-touch input switching and volume adjustment—making it easy to manage your home audio system with freedom Versatile Connectivity: Equipped with RCA1/RCA2/XLR inputs and...
fosiaudio.com fosiaudio.com

Fosi Prime Deal + Launch Celebration​

The ZP3 launch also coincides with our Prime Deal Global Promotion, so you’ll find excellent deals across our best-selling amps, DACs, and speaker accessories. If you’ve been considering a full upgrade, now’s a great time.
Official site: https://fosiaudio.com/pages/fosi-prime-deal-2025
Amazon: https://gtly.ink/amzpd2025
Aliexpress: https://www.aliexpress.com/store/1101515160
eBay: https://www.ebay.com/str/fosiaudio

Thank you again to everyone who’s contributed to this journey. We’ll be actively watching this thread and look forward to your impressions, tests, and feedback once ZP3 lands on your desk.

Cheers,

Team Fosi Audio
 
WillBrink said:
Only one sub out? That might be an issue for many in these modern times.
Click to expand...

How many discrete channels of subwoofer outputs are you are expecting in a preamplifier which seems to intend high quality performance, includes balanced I/O, and some signal processing functionality, while keeping the retail price under $200 with free shipping and free returns (Amazon), and with a further 15% discount from Fosi? More functionality and larger set of features at this price point would seem like a big ask, no?

Hopefully Fosi will send one to Amir Majidimehr and/or one to Erin Hardison for some independent third party objective performance testing, along with some subjective review of the exhibited functionality.
 
Not to be critical, and for what it offers, it's worth the price, but Amazon already has a coupon and an applicable discount; adding the ASR coupon doesn't change anything. So the "exclusive ASR member discount" is no more and no less than what everyone else pays.

Edit
Unfortunately, I just read that it's an infinite rotary control without even a way to visually determine the volume. Fosi guys, I've bought a lot of stuff from you and I really appreciate it, but this is truly incredible, a mistake off the scale. I would never consider a preamp where I can't see the volume. You've taken a lot of great advice from the community and then you've lost your way on something so trivial. I'm shocked.
 
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JRT said:
How many discrete channels of subwoofer outputs are you are expecting in a preamplifier which seems to intend high quality performance, includes balanced I/O, and some signal processing functionality, while keeping the retail price under $200 with free shipping and free returns (Amazon), and with a further 15% discount from Fosi? More functionality and larger set of features at this price point would seem like a big ask, no?

Hopefully Fosi will send one to Amir Majidimehr and/or one to Erin Hardison for some independent third party objective performance testing, along with some subjective review of the exhibited functionality.
Click to expand...
Two, answer is two. ;)
 
Talisman said:
Not to be critical, and for what it offers, it's worth the price, but Amazon already has a coupon and an applicable discount; adding the ASR coupon doesn't change anything. So the "exclusive ASR member discount" is no more and no less than what everyone else pays.

Edit
Unfortunately, I just read that it's an infinite rotary control without even a way to visually determine the volume. Fosi guys, I've bought a lot of stuff from you and I really appreciate it, but this is truly incredible, a mistake off the scale. I would never consider a preamp where I can't see the volume. You've taken a lot of great advice from the community and then you've lost your way on something so trivial. I'm shocked.
Click to expand...
That's to allow for storing the volume for each independent input.
 
Talisman said:
Unfortunately, I just read that it's an infinite rotary control without even a way to visually determine the volume. Fosi guys, I've bought a lot of stuff from you and I really appreciate it, but this is truly incredible, a mistake off the scale. I would never consider a preamp where I can't see the volume.
Click to expand...
I agree. I have been looking for a preamp with adjustable HPF and a remote volume control, but having no way to see the volume setting is a deal breaker.
 
Here's a little trick I've found that helps with the volume knob/dimple position issue.

1) For any input, set the volume control to a normal listening level you like. [regardless of where the dimple in the knob is.]
2) Power down the preamp.
3) Rotate the volume dial so that the dimple reflects your preferred, general listening level. [say somewhere between 9:00-12:00. I use 10:00 as a general position for the dimple]
4) Turn on the preamp.
5) The volume should be at the same level you initially set, but the dial will be at 10:00. Voila!
6) The volume knob dimple now reflects a relative position you set.
7) Works for me just fine.
8) I've used this method for both RCA inputs, and if if you set your 'general' listening level, all you have to do is rotate the knob to 10:00 (my case), and regardless of input, the volume should be at the listening level you set when you turn on the preamp.
9) I've had no unwanted blasting volume when I turn on the preamp.
10) I just make sure the volume knob is at 10:00 before powering down the preamp.

Note: If your source has a settable gain and that's been changed after following the steps above, you will have to re-adjust the dimple position.

Hope this helps.
 
ASR review is up;
amirm

'Fosi Audio ZP3 Preamplifier Review'

This is a review and detailed measurements of the Fosi ZP3 balanced preamplifier. It was sent to me by the company and costs US $189 (coupons available for less).
Fosi ZP3 balanced RCA subwoofer preamplifier preamp tone crossover review.jpg

Despite its low cost, the look of the unit is attractive to me. As is the functionality of having balance and tone controls. What is not is the volume control. It is a rotary, microprocessor controlled volume control which nicely allows remote control access (supplied). The problem is that there are no indications anywhere was to what you have set the volume to. You can easily turn on the unit with volume set...
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JSmith
 
@Fosi Audio I have a question. Would replacement of all NE5532 on board (soldered on PCB, not replaceable socket ICs) with OPA1612A, increase sound quality?
 
JRT said:
How many discrete channels of subwoofer outputs are you are expecting in a preamplifier which seems to intend high quality performance, includes balanced I/O, and some signal processing functionality, while keeping the retail price under $200 with free shipping and free returns (Amazon), and with a further 15% discount from Fosi? More functionality and larger set of features at this price point would seem like a big ask, no?

Hopefully Fosi will send one to Amir Majidimehr and/or one to Erin Hardison for some independent third party objective performance testing, along with some subjective review of the exhibited functionality.
Click to expand...
2 sub outputs (but it would likely not be at $200). But without 2 sub outputs, I'm not buying it at all. So, there is that (as I suspect that I am not he only one).
 
EJ3 said:
2 sub outputs (but it would likely not be at $200). But without 2 sub outputs, I'm not buying it at all. So, there is that (as I suspect that I am not he only one).
Click to expand...
Your next cheapest option is miniDSP Flex followed by Luxsin X9.
 
SoySalsaPicante said:
Your next cheapest option is miniDSP Flex followed by Luxsin X9.
Click to expand...
I have what I need & developed it in my system many years ago.
But thank you for pointing those out, as I can suggest them to others.
The miniDSP line of things is something I have been looking
at to play with for sometime.
Still, a project for next year. As other (non-audio related) projects are
currenty taking up my time (& money)
The Luxsin X9 is something I am not familiar with & will look into.
Thank you for mentioning these products.
 
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