HEAD-TO-HEAD COMPARISON
iFi Zen Phono vs Pro-Ject Phono Box S3 B
We compare the iFi Zen Phono and Pro-Ject Phono Box S3 B head-to-head on performance, features, value, and more. Here's which one wins.
Our Pick
Check Price on AmazoniFi Zen Phono
Scored 9.2/10 in our testing
Best Overall
iFi Zen Phono
Vinyl enthusiasts wanting reference-grade phono amplification under $200
Overall:9.2/10Winner
Check price on Amazon Best Mid-Range
Pro-Ject Phono Box S3 B
Serious vinyl collectors wanting a long-term reference preamp
Overall:9/10
Check price on Amazon Score Breakdown
| iFi Zen Phono | Category | Pro-Ject Phono Box S3 B |
|---|---|---|
| 9/10 | Performance | ✓ 10/10 |
| 9/10 | Features | ✓ 10/10 |
| 8/10 ✓ | Ease of Use | 7/10 |
| 10/10 ✓ | Value | 8/10 |
| 9.2/10 ✓ | Overall | 9/10 |
Specs Comparison
| iFi Zen Phono | Spec | Pro-Ject Phono Box S3 B |
|---|---|---|
| MM + MC | Inputs | MM + MC |
| 36-72dB adjustable | Gain | 40-66dB (7 settings) |
| +/- 0.2dB | RIAA Accuracy | 10+ loading options |
| >82dB (MC) | S/N Ratio | RCA + balanced XLR |
iFi Zen Phono
Pros
- + Reference-grade RIAA accuracy at an affordable price
- + Supports both MM and MC cartridges with adjustable gain
- + Subsonic filter removes rumble without affecting bass
Cons
- − External power supply adds desktop clutter
- − No balanced output option
- − Slight hiss audible with ultra-sensitive IEMs (not an issue with speakers)
Pro-Ject Phono Box S3 B
Pros
- + Extensive gain and impedance loading options for any cartridge
- + Balanced XLR output for noise-free long cable runs
- + Superb build quality in a compact metal chassis
Cons
- − More expensive than the iFi Zen Phono
- − DIP switches require opening the case for some adjustments
- − Overkill for casual listeners with MM-only cartridges
Our Verdict
Based on our scoring, the iFi Zen Phono comes out on top with an overall score of 9.2/10. The iFi Zen Phono is a revelation at its price. RIAA accuracy within 0.2dB means your records sound exactly as the mastering engineer intended. Switchable MM/MC input with adjustable gain handles any cartridge you throw at it. Surface noise handling is remarkably clean.
Buy the iFi Zen Phono on AmazonRead the full Best Vinyl Preamps 2026 guide for complete reviews of all 3 products.