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Pro-Ject Phono Box MM

Phono preamplifier for moving magnet cartridges

26 Reviews | 2 questions - 2 answers

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Item # 252PBMMB

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Was: $99.99

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Our take on the Pro-Ject Phono Box MM

Get back in touch with your record collection

Do you have a turntable, but no phono input on your receiver or shelf system? No problem — just hook up the Pro-Ject Phono Box MM preamplifier inline between your record player and any of your receiver's aux inputs, and you're ready to enjoy your LP collection all over again. This preamp's clean, simple design takes advantage of high-quality, low-noise circuitry to give you the warm, richly detailed sound that vinyl is famous for, at a bargain price.

worked great right out the box,!

rick, Nashville, Tn

What's in the Box:

  • Phono (MM) pre-amplifier
  • DC power supply (with attached 5' DC output cord)
  • US power plug adapter
  • UK power plug adapter
  • EU power plug adapter
  • Instructions (English/ German)

Product Highlights:

  • compatible with moving magnet phono cartridges
  • external power supply for reduced noise and interference
  • metal case shields electronics from vibration and electromagnetic interference
  • gold-plated input and output RCA jacks for solid, corrosion-free connections
  • dual-mono circuitry for optimal channel separation
  • small size allows placement near turntable
  • input impedance: 47 kohms/100pF
  • gain: 32dB
  • signal-to-noise ratio: 82dB
  • THD: 0.005%
  • RIAA response accuracy: 0.5dB (20-20,000 Hz)
  • 4-1/4"W x 1-3/16"H x 3-11/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

Pro-Ject Phono Box MM Reviews

Average Customer Review(s):

(26 Reviews)

Pro-Ject Phono Box MM

Anonymous from Bridgeport, CT on 12/18/2016

This guy does exactly what he says he'll do, so no complaints there. I wish he had a bit more punch, but perhaps that's a product of my daisychained turntable to old Bose wave radio set up. Probably, it is. On the front side, crutchfield yet again nails the service, advice, shipping, etc. fantastic five star company.



Pro-Ject Phono Box MM

Anonymous from Salisbury, NC on 10/17/2016

Crutchfield Customer Review (What's this?)

with all of the technology available, it would be wishful thinking for a preamp to alert you that your turntable isn't compatible.



Pro-Ject Phono Box

rick from Nashville, Tn on 7/30/2016

Crutchfield Customer Review (What's this?)

worked great right out the box,!

Pros: easy in/out ...basic operation just like a phonograph player: turn it on and let the music begin!


Pro-Ject Phono Box MM

Bill from Cleveland, OH on 7/19/2016

Crutchfield Customer Review (What's this?)

Great product. Performs as expected.

Pros: All

Cons: None

Good Value

bcarroll from Atlanta, GA on 6/9/2016

Crutchfield Customer Review (What's this?)

Bought for my daughter to use with her new Yamaha Adventage receiver, and Monitor Audio S1 speakers. Turntable is an old A-T Linear Track SL5, cartridge is an A-t an A-T P-Mount AT-331LP. Sound is good thought the phono pre, actually, better than I expected for the price (open box). Not as refined as the Cambridge Audio 651, but hey, that's twice the price. All in all, a good option for a low cost Phono pre. I would recommend it to anyone looking to move up from a built-in phono pre for the price.

Pros: Good Sound, easy installation, Open Box saves even more.

Cons: None at this price.

Project phono box MM

Phil from Opelousas on 5/25/2016

Crutchfield Customer Review (What's this?)

Does what it is supposed to do without a footprint of it's own

Pros: Small. Easy setup. Solid.

Cons: None

Pro-Ject Phono Box MM

Anonymous from Sonora, CA on 5/19/2016

Crutchfield Customer Review (What's this?)

Exactly what it said it would be good price good product



Just what I needed.

Charlie from Lexington, KY on 5/16/2016

Crutchfield Customer Review (What's this?)

Strait forward setup. Works great.



Pro-Ject Phono Box MM

Anonymous from Carrollton, TX on 5/7/2016

Crutchfield Customer Review (What's this?)

It does exactly what its suppose to do without vacuum tubes and high price. Ta-da.



Good Phono Preamp

David from omaha, NE on 3/9/2016

Crutchfield Customer Review (What's this?)

Bought this to go with a new Pro-Ject turntable. Assumed my amp. had a phono stage, but it didn't. Didn't want to spend a lot, but didn't want junk either. This unit fits the bill perfectly. Performs great. This unit was $99, but it can be found for less. Completely satisfied.

Pros: Quality, performance

Cons: None

So-so performance

Thomas from spokane, WA on 3/3/2016

Crutchfield Customer Review (What's this?)

I own a Yamaha R-S700 receiver with which I'm very happy. I thought I could bump the performance of the phono stage a bit with this product. Although the preamp did increase the volume slightly, the quality of sound/fidelity was noticeably worse. I suppose I could spend more on a different/better preamp, but I"m happy with what I have, knowing what I know now.

Pros: Slightly increased volume.

Cons: Degradation of sound quality.

Exactly what I needed and expected

Jack from Illinois on 10/12/2015

Crutchfield Customer Review (What's this?)

I purchased a turntable to use both as a devise to transfer vinyl recording to digital format and for playback connected to a receiver, unfortunately the info regarding the turntable did not mention that it did not have a built in preamp. This amp provided the perfect solution - small, easy to hookup and a good price.

Pros: Small size fits easily with my system, quick and easy to install and price didn't break the budget.

Cons: None

Great value. Great sound.

Eric from Arizona on 8/3/2015

Crutchfield Customer Review (What's this?)

The product performs as stated. Great price point. I can now listen to some of my old favorite albums as they were intended.

Pros: Small, easy to set up. Easy to hide behind system.

Cons: Should have purchased this a long time ago.

As Advertised

David G from Nebraska on 7/30/2015

Crutchfield Customer Review (What's this?)

The phono preamp was exactly as described and functions perfectly. Delivery time was good, very good sale in my opinion. I'm a satisfied customer.

Pros: As described on website, quick delivery.

Cons: None

Does the job

ComposerD from Florida on 7/6/2015

Crutchfield Customer Review (What's this?)

Nice, simple box. Does what it's supposed to do. Not too exciting, but, it's not supposed to.

Pros: Does the job. Very compact.

Cons: Not much excitement.

Love It

Great little amp from Los Angeles, CA on 6/14/2014

Crutchfield Customer Review (What's this?)

This is my first phono pre-amp. Sounds great, easy setup. Pairs well with my Pro-ject Debut Carbon. No problems with hum, since i connected the turntable ground to the amplifier ground.

Pros: Easy to use, economical choice for debut carbon owners. Good sound.

Cons: No Support for moving coil cartridges.

phone preamp

thepearl from Basking Ridge, NJ on 6/13/2014

This was exactly what I needed for my vintage Dual 1245. My new receiver did not have the phono inputs like my old Akai did. The unit is simple, without any need for me to access it regularly and without a large price tag.



nice little product

gary m from lake grove n.y on 5/12/2014

Crutchfield Customer Review (What's this?)

After getting a new av receiver I new I needed this product to play my vinyl albums. It was simple to connect and so far so good. small enough to hide.

Pros: compact size. good performance.

Cons: nothing bad about the pro-ject, but its a shame you must go out to purchase additional amp to play old phono's on todays new receivers. vinyl is still great to play and has superior sound quality over cd's.

Upgrade with this unit

Bill B from Tampa Bay, FL on 1/23/2014

Crutchfield Customer Review (What's this?)

I've found the phono stages on modern receivers to be weak (not nearly as loud as the other input signals) and even though my present receiver has a phono input I figured the Phono Box would be an upgrade over what was in the receiver, and for the price, why not give it a shot. It was a definite improvement in signal strength. My turntable is the Project Debut III and it is a perfect match. If you decide to do this upgrade do not plug it in to the receiver's phono jack, plug it in to the DVD, Aux, Cable, Tape input, etc. As usual Axel my Crutchfield rep was great.

Pros: Improves signal quality and strength

Cons: None

Phono Pre-Amp

JPOSBORN from Dunellen, NJ on 1/17/2014

Crutchfield Customer Review (What's this?)

I had been searching for a reasonably priced AV receiver which included a phono pre-amp. Yes, I actually do still play my vinyl. Much to my disappointment there are few, if any, offerings. It was suggested that I consider an outboard photo preamp and the Pro-Ject was selected. The device works perfectly and provides appropriate RCA in and out jacks, a phono ground and power connection. It is solid, with a metal case and appears to be well constructed. The attractive thing is its size; it is a small unit which I was very easily able to tuck into my cabinet, behind the receiver and out of sight. There are no controls on the unit, so there is no need for access. It was also reasonably priced. The Pro-Ject that I selected is for moving magnet cartridges, but I saw other options for those who use moving coil, or want both.

Pros: Simple, solid design. Size. Price.

Cons: None that I could identify


RonL from Philadelphia, PA on 12/3/2013

Crutchfield Customer Review (What's this?)

This is the best money I've spent in a long time! The unit is compact (I keep it on a shelf behind the CDs) and extremely easy to hook up. More important - and I am thrilled by this - it has enhanced the sound of my LPs and I'm talking late 60s, early 70s recordings: Beatles, Dan Hicks and the Hot Licks as well as Maria Callas and Glenn Gould! I'd recommend not thinking twice about this product. I trust you'll be as delighted as I am. Happy Listening! As always, great service from the Crutchfield folks.


Cons: None

Best bang for the buck

GI from San Juan, PR on 7/26/2013

Crutchfield Customer Review (What's this?)

Great product! It exceeds its price range. Sturdy build. Greatly improved the sound of my system.

Pros: Great sound at a reasonable price.


Phono Pre Amp from Green Valley, AZ on 7/10/2013

Crutchfield Customer Review (What's this?)

A snap to hook-up and it works perfectly.

Pros: Easy to install

Cons: Lacks an on/off switch

Pro- Ject Phono Box

Dan R from Cincinnati, OH on 6/30/2013

Crutchfield Customer Review (What's this?)

Excellent product; hookup a piece of cake; works flawlessly with my Onkyo 414 and turntable



works great and good value

bigboy kenny from pensacola on 6/18/2013

Crutchfield Customer Review (What's this?)

Easy to hook up and records sound as great as i remember.



Turn Table Preamp

Anonymous from Augusta Ga. on 7/21/2012

Crutchfield Customer Review (What's this?)

Excellent service and prompt delivery. Just what I expected from Crutchfield ! Thanks, JPB




Hands-on research

Product Research


Phono (MM) Preamp: The Pro-Ject Phono Box MM allows you to connect a turntable with a MM (moving magnet) cartridge to a home receiver or amplifier without a dedicated phono input.

Metal Case: The Phono Box MM's metal case shields the electronics from vibration and electromagnetic interference.

Dual-Mono Circuitry: The Phono Box MM provides optimal channel separation through dual-mono circuitry and low-noise ICs.

RIAA Equalization: The Pro-Ject Phono Box MM provides amplification and RIAA equalization for MM cartridges.

RCA Connections: The Phono Box MM features gold-plated stereo RCA connections. A stereo RCA input connects your turntable, and a stereo RCA output connects your home receiver or amplifier. RCA cables sold separately.

Ground Terminal: The phono preamp also has a turntable ground, in case your turntable has a separate ground lead. This provides shielding to the tone-arm and the sensitive circuitry in the turntable.

Outboard Power Supply: The Pro-Ject Phono Box MM is powered by the included DC power supply. The external power adapter is separate from the phono preamp to further improve sound quality.

  • Input: 100-240V AC~50/60Hz, 0.4A max
  • Output: +/-18V DC - 0.5A

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Spoke with Buzz to confirm this is the preamp I needed for my turntable. [ Richard  Nov 09, 2016 ]
Small compact and fit my needs. [ Richard  Nov 04, 2016 ]
Upgrade to system; use turntable [ FRANK  Oct 15, 2016 ]
pro-ject makes great products [ charles  Sep 13, 2016 ]
Good Price [ Terry  Aug 16, 2016 ]
I chose this product because so that I could listen to my vinyl collection from 60s and 70s. through my receiver/speakers. [ Pradeep S.  Jun 29, 2016 ]
Value and reviews. [ Michael  Jun 24, 2016 ]
I've bought one before. Great for the price. [ Alan  Jun 02, 2016 ]
Least expensive phono pre-amp and seems to be most popular choice for phono pre-amp for receiver (Marantz NR1506) that does not have phono input/pre-amp built in. [ Andy  May 13, 2016 ]
Reasonably priced solution to my phono preamp needs. [ E  May 13, 2016 ]
Excellent rating [ Philip  May 12, 2016 ]
High reviews and best seller. Also in my price range. [ CHARLES  May 01, 2016 ]
Advice from my expert technical advisor, Ann. Ann's Bio: [ Elizabeth  Apr 14, 2016 ]
I needed it. [ Walter  Apr 11, 2016 ]

2 questions already asked

It looks like the R1000-EDT is a moving magnet cartridge, so this should work for you. I would recommend reaching out to an Advisor by phone or online chat first to double check though. [ Jeff  Jan 09, 2014 ]  Staff
Thanks for your question. For information on determining the type of cartridge your turntable has I would recommend trying an internet search for the model number. Yo could also reach out to an Advisor by phone or online chat. They will be able to help determine the type of cartridge and help you get the best gear for your system. [ Jeff  Dec 28, 2013 ]  Staff

Looking for more? Check out the next model in this lineup.

Pro-Ject PhonoBox DC (BK)

Pro-Ject Phono Box DC


Out of Stock

$99.99 After $29.01 Price Break

Add to Cart

Add moving coil cartridge capability

The Pro-Ject Phono Box DC offers these features:

compatibility with moving magnet and moving coil phono cartridges

more gain and less noise for better sound