A phono preamp is the small box that makes a turntable work with a normal amplifier, and a good one is one of the cheapest upgrades in a vinyl system. These are the best-reviewed options on Amazon, from a $70 tube preamp to an audiophile upgrade that handles almost any cartridge.

The short answer

The best phono preamp for most turntables is the Pro-Ject Phono Box MM (about $89): quiet, accurate, and rated 4.6 out of 5 across more than 1,100 Amazon ratings.

On a budget, the tube-based Fosi Audio Box X2 (about $70) is the most-reviewed pick. For moving-coil cartridges, get the Fosi Box X5 (about $110) or step up to the iFi Zen Phono 3 (about $230–$250).

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In this guide
  1. Do you need a phono preamp?
  2. Quick comparison
  3. Best overall: Pro-Ject Phono Box MM
  4. Best budget: Fosi Audio Box X2
  5. Best for subwoofer systems: Fluance PA10
  6. Best MM/MC under $150: Fosi Box X5
  7. Best upgrade: iFi Zen Phono 3
  8. MM vs. MC cartridges
  9. How to hook one up
  10. Frequently asked questions

Do you need a phono preamp?

A turntable's cartridge puts out a tiny signal that also needs RIAA equalization before it sounds right. A phono preamp does both jobs. You need a separate one if neither your turntable nor your amplifier has one built in. Turntables like the Fluance RT85 and Pro-Ject Debut Carbon EVO leave it out on purpose, and many AV receivers no longer have a PHONO input. Even if your turntable has a built-in preamp, a good external one is often a noticeable upgrade. More background in our turntable guide.

Quick comparison

PreampCartridgesNotable featurePrice
Pro-Ject Phono Box MMMMDual-mono circuit, metal case~$89
Fosi Audio Box X2MMTube stage, 3 gain settings~$70
Fluance PA10MMRumble filter, shielded case~$100
Fosi Audio Box X5MM and MC4 gain settings, 38–66dB~$110
iFi Zen Phono 3MM and MCAdjustable gain and loading, subsonic filter~$230–$250
Best overall~$89
Pro-Ject Phono Box MM
4.6 / 5 (1,134 Amazon ratings)

The no-fuss classic. Pro-Ject builds turntables, so it knows what a moving-magnet cartridge needs: a quiet, accurate RIAA stage with dual-mono circuitry for clean channel separation, low-noise components, and gold-plated connections in a metal case that shields against hum. Plug it in, connect the ground wire, and forget about it.

Worth knowing: it's moving-magnet only and has no adjustments, which is exactly right for the turntables most people own.

Check price on Amazon Prices change often — verify current pricing on Amazon.
Best budget~$70
Fosi Audio Box X2
4.5 / 5 (3,475 Amazon ratings)

The most-reviewed preamp on this list. It adds a small vacuum-tube stage for a warm, rich presentation that suits vinyl, with three switchable gain settings (39, 42, or 45dB) to match your cartridge and amp. The tubes are swappable if you want to experiment, and a 3.5mm aux input lets it double as a tube preamp for a phone or other source.

Worth knowing: it's moving-magnet only. If you want a neutral, uncolored sound rather than tube warmth, the Pro-Ject is the better fit.

Check price on Amazon Prices change often — verify current pricing on Amazon.
Best for subwoofer systems~$100
Fluance PA10
4.6 / 5 (762 Amazon ratings)

Its selectable low-frequency rumble filter rolls off everything below 20Hz, which matters more than it sounds: warped records and footfalls create inaudible low-frequency energy that makes woofers pump and subwoofers boom. If your system has a sub, that filter is worth having. Separate left and right op-amps keep channel separation high, and a metal shielded case keeps out electrical noise. It's the natural partner for a Fluance RT85.

Worth knowing: moving-magnet cartridges only.

Check price on Amazon Prices change often — verify current pricing on Amazon.
Best MM/MC under $150~$110
Fosi Audio Box X5
4.5 / 5 (371 Amazon ratings)

If you have, or plan to try, a moving-coil cartridge, the X5 handles both types for about the price of an MM-only box. Four gain settings (38, 48, 56, and 66dB) and an MM/MC switch cover almost any cartridge, and it's built with precision film capacitors and resistors in an aluminum chassis. It pairs nicely with Fosi's V3 stereo amplifier for a compact, affordable vinyl system.

Worth knowing: it has no adjustable loading, which some moving-coil cartridges benefit from; for that, step up to the iFi.

Check price on Amazon Prices change often — verify current pricing on Amazon.
Best upgrade~$230–$250
iFi Zen Phono 3
4.4 / 5 (150 Amazon ratings)

The one to buy if your turntable and cartridge have outgrown a budget preamp. It supports MM and MC cartridges with gain from 36 all the way to 72dB, and you can set gain and loading independently, so it can be matched precisely to almost any cartridge. An intelligent subsonic filter removes rumble without dulling the bass, and its very low noise and distortion let a good cartridge show what it can do.

Worth knowing: the flexibility is wasted on an entry-level turntable. Pair it with something like the Pro-Ject Debut Carbon EVO or better.

Check price on Amazon Prices change often — verify current pricing on Amazon.

MM vs. MC cartridges

Moving-magnet (MM) cartridges are what nearly every turntable under $1,000 ships with, including every turntable we recommend. They have a fairly strong output and work with any phono preamp. Moving-coil (MC) cartridges are a premium upgrade with a much weaker signal, so they need more gain from an MC-capable preamp like the Fosi Box X5 or iFi Zen Phono 3. If you don't know which you have, it's MM.

How to hook one up

  1. Turntable to preamp: connect the turntable's RCA cables to the preamp's input, and attach the turntable's ground wire to the preamp's ground terminal. A loose or missing ground wire is the most common cause of hum.
  2. Turn off any built-in preamp on the turntable (set it to PHONO), so you're not using two at once.
  3. Preamp to amplifier: connect the preamp's output to any line-level input on your receiver, amplifier, or powered speakers: AUX, CD, or LINE. Not the PHONO input.
  4. Keep it away from power supplies and transformers; a few inches of distance can be the difference between silence and hum.

Need speakers or an amp to go with it? See our best stereo receivers, powered speakers for turntables, and compact Fosi amps.

Frequently asked questions

What is the best phono preamp?
For most turntables, the Pro-Ject Phono Box MM (about $89) is the best choice: quiet, accurate, and rated 4.6 out of 5 across more than 1,100 Amazon ratings. The Fosi Audio Box X2 is the best budget option, and the iFi Zen Phono 3 is the best upgrade.
Do I need a phono preamp if my turntable has one built in?
No, a built-in preamp works fine. But a good external phono preamp is often a noticeable upgrade over the basic preamp built into an entry-level turntable. If you add one, switch the turntable's built-in preamp off.
What is the difference between MM and MC phono preamps?
Moving-magnet (MM) cartridges have a stronger signal and work with any phono preamp. Moving-coil (MC) cartridges have a much weaker signal and need a preamp with MC support and more gain, like the Fosi Box X5 or iFi Zen Phono 3.
Where do I plug in a phono preamp?
Connect the turntable to the preamp's input and attach the ground wire, then connect the preamp's output to a line-level input on your amplifier, receiver, or powered speakers, such as AUX or CD. Don't use a PHONO input, or the signal gets amplified twice.
Why does my turntable hum?
Most often because the turntable's ground wire isn't connected to the preamp or amplifier. Hum can also come from placing the preamp next to a power supply or transformer.