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Mobile Fidelity Super HeavyWeight

Stabilizing turntable weight

8 Reviews

Item # 406SUPHEWT

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Our take on the Mobile Fidelity Super HeavyWeight

A little extra weight in the right place for your records

When you're playing your favorite records, you want to do anything you can to get optimum sound. This stabilizing weight goes over the spindle after you put the vinyl down, and helps dampen internal resonance, reduces wow and flutter, and keeps the record from slipping.

Product Highlights:

  • stabilizing weight helps you get the best sound out of your favorite records
  • soft polymer underside with machined aluminum outer shell
  • weight: 367.4 grams (13 ounces)
  • 3" diameter x 1-3/8" height
  • warranty: 60 days
  • Our 60-day money-back guarantee

What's in the Box:

  • Record weight
  • Drawstring pouch

If your buying a Mofi deck and phono stage, this is an obvious purchase!!!

Louis, San Juan, PR


Mobile Fidelity Super HeavyWeight Reviews

Average Customer Review(s):

(8 Reviews)

Mobile Fidelity Super HeavyWeight

Crutchfield customer from Raleigh, NC on 1/5/2019

Crutchfield Customer Review (What's this?)

It does make a positive difference sonically, but on some LPs the runout grooves are too close to the weight and the headshell will bump against it when the arm is raised.



Mobile Fidelity Super HeavyWeight

Louis from San Juan, PR on 12/29/2018

Crutchfield Customer Review (What's this?)

If your buying a Mofi deck and phono stage, this is an obvious purchase!!!

Pros: Perfect compliment to my Mofi set-up. It works perfectly.

Cons: None

Mobile Fidelity Super HeavyWeight

Crutchfield customer from Woodbury, CT on 12/10/2018

Crutchfield Customer Review (What's this?)

Looks great, and makes a noticeable difference in slight warps. May not be necessary on higher end turntables that are already well dampened or quiet, but does help a significant amount on more modest decks. If you are already happy with a preamp and stylus, this is a logical next step, but get those other things right first.

Pros: Appearance, build quality

Cons: Price

The Super HeavyWeight

brandon from Racine, WI on 10/14/2018

Crutchfield Customer Review (What's this?)

I bought the Super HeavyWeight to go along with the StudioDeck, they look & work great together.

Pros: Fits snug on the spindle. Looks good. Matches MoFi turntable. Additional mass to dampen vibrations as well as secure record to platter.

Cons: over priced

Good Product

James from San Antonio, TX on 9/12/2018

Crutchfield Customer Review (What's this?)

Good product to dampen & hold vinyl more securely. weight is not a problem for potential cause of excessive wear on motor/belt.

Pros: Very good to hold vinyl to platter & dampen unwanted vibrations. Weight not seen as a motor & belt wear issue.

Cons: Pricey

Super heavy weight

Michael from Sterling Hts, MI on 9/9/2018

Crutchfield Customer Review (What's this?)

What a difference in sound! Mofi does it again! Thank you Crutchfield!

Pros: Everything it's supposed to do! Awesome!

Cons: None

Mobile Fidelity Super HeavyWeight

craig from Richmond, VA on 7/14/2018

Crutchfield Customer Review (What's this?)

My music hall 5.3 came with a screw on record weight. Although I am a skeptic with regards to such accessories, upon a friend's recommendation (insistence) , I ordered the MoFi. The difference was not the least subtle. The bass was cleaner and fuller, treble less shrill, the overall sound fuller or more complete. To draw an analogy, before the MoFi the sound was like a circle lightly and incompletely filled in; with the MoFi, the circle was completely filled in with more saturation. I am not sure why or how this works, but suspect it has to do not only with the weight per se perhaps "flattening" the record but also the "gel" contained within the weight dampening any vibrations. Just to make sure I did not experience purchase bias, I had a friend visit allegedly to listen to a new album. Unknown to him, I played the lp with the music hall and then the MoFi weight-- he didn't know what I had done -- he immediately asked me what had improve the sound, commenting that whatever it was, it certainly was not a subtle difference. He wants one now. Besides the sound, it is a true pleasure not to have to screw down the weight (as was the case with the music hall supplied weight).

Pros: truly improves the sound its "slip on" mechanism beats screw down weights

Cons: none so far (although in a way, the price is high for a low tech device).

Mobile Fidelity Super HeavyWeight

Tim from South Portland, ME on 6/11/2018

Crutchfield Customer Review (What's this?)

The Mofi Super Heavy Weight not only feels well built, but fits snugly on the spindle. I previously was using a cheap weight and I was skeptical that a far more expensive weight would make a difference,but boy was I wrong! Bass is tighter and more articulate and there is more shimmer on the highs and it looks great to boot.

Pros: Definitely performs as Mofi advertised!

Cons: None


Hands-on research

Product Research


Super HeavyWeight: The Super HeavyWeight was designed with the assistance of MoFi Electronics' good friend, Mike Latvis, of Harmonic Resolution Systems (HRS). The device uses Latvis' proprietary polymer material, renowned for its exceptional noise-absorption characteristics. In addition to coupling the record to the platter, Super HeavyWeight significantly reduces noise - specifically, record groove, motor, and bearing noise. Listeners will hear more music due to resultant blacker backgrounds, increased inner detail, improved clarity, enhanced micro-dynamics, and greater bass impact.

  • Construction: The outer-shell is comprised of billet-machined 6061 aluminum for an easy grip. The underside is made from a soft polymer that ensure damage-free operation with LPs.
  • Weight: The Super HeavyWeight weighs in at 364 grams. This is the optimum weight with respect to applying no strain or stress to a turntable's motor, bearing, or suspension.
  • Dimensions: MoFi's Super HeavyWeight measures 3.0625" (diameter) x 1.375" (height).

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?

Excellent product made by a US company [ Louis  Dec 15, 2018 ]
youtube video reccomendation [ Michael  Nov 26, 2018 ]
Online reviews [ Ronald  Sep 20, 2018 ]
want to try this accessory for personal use as once used similar items when worked as a DJ. [ JAMES  Aug 26, 2018 ]
It complements my UltraDeck turntable and furthers the Mobile Fidelity design falsify of reducing vibration through the absorption of noise; by using targeted materials that add value to the final sound [ Paul  May 15, 2018 ]
It improves the sound quality when playing vinyl by making the record "flatter" [ John Fields  Apr 15, 2018 ]