Half-Speed Disasters

Linked here are more than 100 Half-Speed mastered records that have exceptionally poor sound compared to the Hot Stamper pressings we’ve auditioned, which inludes both vintage early pressings and reissues.

On this blog we detail precisely what problems Half-Speed mastering causes. These hundred or so pressings are proof of the damage it can do to perfectly good recordings.

Byrd at the Gate – Another Hyped-Up MoFi

Hot Stamper Pressings of Jazz Guitar Recordings Available Now

UPDATE 2026

This review was written about ten years ago. Since then we have heard some amazing early Black Label Riverside recordings, including some by Charlie Byrd.

Another audiophile hall of shame pressing, and yet another MoFi LP reviewed and found seriously wanting.

This is a title Mobile Fidelity ruined (what else is new?), and having just played an early Riverside LP I can see how their mastering approach was — as is so often the case — misguided to say the least.

First off, the guitar and the drums on the original are tonally right on the money. They sound like bass and drums should. They sound, in a word, correct.

Mobile Fidelity felt it necessary to brighten up both and the results are a phony sounding guitar and phony sounding drums, with tizzy cymbals thrown in for good measure.

(The Wes Montgomery MoFi title has many of the same faults, but it’s not quite as bad as this one. We’ve had Hot Stamper copies of the originals so we know they can sound superb, some of RVG’s best work.)

The old Mobile Fidelity — the pre-Heavy Vinyl Mobile Fidelity — rarely met a master tape they didn’t think needed a healthy dose of top end boost. They also apparently did not understand what an acoustic guitar sounds like. They blew it on every last one of the Cat Stevens albums, brightening up the guitars, which, as we all know from playing with the treble controls on our receivers way back when, emphasizes the “picking” of the strings at the expense of the resonating guitar body as well as the vibrating string harmonics.

What makes Byrd At The Gate a good record is the natural acoustic guitar tone. Once you screw that up, what’s left?

An audiophile record, for audiophiles who like phony sounding guitars. (Chesky anyone?)

Another reason the Mobile Fidelity is such a joke is that this recording inherently has a lot of ill-defined bass. Since Half-Speed mastering causes a loss of bass definition, their pressing is even WORSE in this respect. Bad guitars, bad drums and bad bass — that pretty much covers everybody in the trio. (more…)

A Tale of Two MoFi Deja Vu’s

Hot Stamper Pressings of the Music of Crosby, Stills, Nash and (Sometimes) Young

UPDATE 2026

A commentary from a long time ago about two different MoFi pressings of the same title, Deja Vu. We stopped playing Mobile Fidelity records like this a long time ago and the only ones we play these days are ones that are sent to us for free from customers or friends. Mobile Fidelity made some good records back in the old days. As I wrote not long ago, I owe them a debt of gratitude.

But the records we’ve auditioned that they’ve been making more recently had me asking: How is this company still in business?

Sonic Grade: F (or not!)

Just for fun about 10 years ago [make that 20] I pulled out a MoFi pressing of Deja Vu I had laying around. I hadn’t played their version in a long time. I could have gone a lot longer without playing it, because what I heard was pretty disappointing. Playing their record confirmed all my prejudices. The highs sizzled and spit. The heart of the midrange was recessed and sour.

Know what it reminded me of? A bad Japanese pressing.

(Since most of them are pretty bad I could have just said a typical Japanese pressing, but that’s another story for another day.)

And if that’s not bad enough, the bass definition disappeared. Bass notes and bass parts that were clearly audible and easily followed on our Hot Stamper copies were murky, ill-defined mud on the MoFi.

If you own the MoFi you owe it to yourself to hear a better sounding version. You really don’t know what you’re missing.

But Then, A Few Years Later We Played This Copy…

Here is what we had to say at the time:

Hot Stamper Sound on the MoFi pressing of Deja Vu, can it be possible? I have NEVER heard the MoFi sound this good, not even close. This just KILLS the other copies I’ve heard. I wrote a scathing review of their badly mastered pressing which you can read below, and I still stand behind every word, because this copy is not your average MoFi. The average one still sucks. What we are selling here is a FLUKE. Here is the story from our Hot Stamper shootout we just did.

This week we picked up a very clean looking MoFi pressing and decided to throw it in the shootout just for fun. We were shocked — this one actually sounded good! Not as amazing as our best Hot Stampers, but much better than we had expected. We checked our old copy and heard the same bad sound described above. 

Pressing variations exist for audiophile records as well, and here was another example. It just goes to show that nothing short of playing a record will tell you how it sounds — except for reading our website. Who besides us could spend so much time playing so many bad records? It’s a dirty job, but we’re happy to do it. Hearing one amazing record makes up for playing 10 bad ones, so we’ll keep at it.

Keep in mind that the only way you can never be wrong about your records is to simply avoid playing them. If you have better equipment than you did, say, five or ten years ago, try playing some of your MoFi’s, 180 gram LPs, Japanese pressings, 45 RPM remasters and the like. You might be in for quite a shock.

It’s all good — until the needle hits the groove. Then you might find yourself in need of actual Better Records, not the ones you just hoped were better.

(more…)

Katy Lied Is a MoFi that Beggars Belief

Katy Lied is bad enough to have earned a place in our Mobile Fidelity hall of shame.

By the time I was avidly collecting Mobile Fidelity records in the late 70s, this title had already gone out of print, one of the first to do so. My guess is that even the guys running MoFi knew when they had a turkey on their hands and mercifully let this one go out of print and out of its misery.

Yes, the sound is so bad that even the brain trust at MoFi could hear it. 

Compressed and lifeless (almost as lifeless as the screen speakers so popular at the time), it’s hard to imagine any version sounding worse than this one. (Which is why it’s on this list.)

And yet I continued to play my copy, for enjoyment of course, oblivious — I must have been oblivious, right? — to the bad sound.

Why? That’s hard to say, but here’s a stab at it.

The vinyl was exceptionally quiet for one thing, and for another, as an audiophile I knew this MoFi pressing had been made with tender loving care, using a putatively superior process, Half-Speed mastering, from the original master tapes, and had been pressed in Japan on the quietest, flattest vinyl in the world. What could possibly go wrong?

My old story about One Man Dog gets to the heart of it.

I didn’t understand records very well and I sure didn’t understand the value of doing shootouts — or even how to do them — using multiple copies of the same album.

(more…)

Getting Who’s Next Exactly Backwards

Hot Stamper Pressings of the Music of The Who Available Now

A classic case of live and learn.

What follows is the commentary for the Canadian One Sided Half-Speed that we had auditioned around 2000. It came in a regular jacket, not the one you see pictured, and was part of a big overstock batch I had gotten my hands on a number of years before.

Getting It Exactly Backwards

Half of this record is Half-Speed Mastered! There’s an interesting story behind this album. Those of you who’ve been collecting audiophile records for a long time may remember that Who’s Next was released as an MCA Masterphile Half-Speed Mastered pressing produced in Canada. I remember liking it back in the day, which had to be 15 years ago at least. But they are very rare and I haven’t played one in many years.

I ran into some sealed Canadian pressings of Who’s Next, and when I cracked one open to play it I noted it had Masterphile written in the deadwax on one side. Apparently they had made so few Masterphile pressings that the metal work was still useable and they decided to press some “regular” records with one of the stampers.

And I remember I used to tell people that the good side, side one, was the Masterphile side. Then three or four years ago [circa 2000], I had occasion to play the record. Lo and behold, side one was bright and phony, and side two was rich and sweet, like the good Track Label pressings! I had gotten it exactly backwards.

(more…)

So at 45 RPM – One Side Bad, Another Awful, What’s a Mother to Do?

Hot Stamper Pressings of the Music of Peter Gabriel Available Now

In 2016 a version of So came out using this currently popular vinyl format:

2 180g discs / 45 RPM / Deluxe, Numbered, Limited Edition /Half Speed mastered

As of this writing, there are 15 copies on Discogs, the cheapest of them starting at $139.77.

Sounds like it must be pretty good for that kind of money!

This So release was mastered by a fellow named Matt Colton, who has been doing this kind of work for a very long time, judging by the fact that he has 3,775 technical credits under his name on Discogs.

That did not stop this particular 2 LP set from being one of the worst sounding albums we have played in quite a while.

Let’s take a closer look at the specifics. We played sides one and four of the two-disc, four-sided album. That was more than enough to evaluate the sound quality.

(more…)

MoFi Sure Added Plenty of Sparkle to These Acoustic Guitars

Hot Stamper Pressing of the Music of Ry Cooder Available Now

UPDATE 2026

This review is from many years ago, the last time we had a copy of the album in stock to play. Hard to imagine I would not still agree with it though.

As you probably know, the MoFi of Jazz goes for big bucks nowadays — $500 and up. Is it worth it? 

You’ve got to be kidding. It’s a nice record as far as it goes, but it suffers from the same shortcomings as just about every Mobile Fidelity pressing we bother to play these days (with some obvious exceptions of course).

We have a test pressing, and knowing that the MoFi is the standard against which many audiophiles prefer to judge our Hot Stampers, we listened to it first before going about our comparison test.

Our MoFi copy is actually tonally correct, which was a bit of a surprise. (Yours of course could very well be otherwise.)

Right away we could hear exactly what people like about it, the same thing that has always impressed audiophiles about half-speed mastered records: their often outstanding transparency.

Jazz on MoFi has zero-distortion, utterly clear, spacious, see-through sound.

But listen past that and what do you hear?

Don’t those guitars seem to have that MoFi Tea-for-the-Tillerman “sparkly” quality you hate: all pluck and no body, all detail and no solidity?

Nothing has any weight.

Nothing sounds natural.

Nothing sounds real.

It’s pretty, maybe, but it sure ain’t right.

It’s the kind of sound that shouts out to the world “Hey, look at me, I’m an audiophile record! See how I sound? So clear! So clean!”

Which isn’t bad for about two minutes, and then it’s positively insufferable.

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Back to the Stone Age with The Pines of Rome on Mobile Fidelity

Hot Stamper Pressings on Decca & London Available Now

An audiophile hall of shame pressing and another MoFi LP reviewed and found wanting.

MoFi’s version of this The Pines of Rome (#1-507) is one of the worst sounding classical records they ever produced, and that’s saying something, because practically all of their classical catalog is just awful — thin and bright, with sloppy bass and completely unnatural string tone.

As hard as it may be to believe, the MoFi of the Pines of Rome makes the typical Classic Records pressing sound good, shrill strings and all.

The UHQR is somewhat better, especially in the lower octaves, but it’s maybe a D+ or C-, not an audiophile record if we are using the term to mean what it no longer means —  a pressing with higher quality sound. (more…)

The Most Serious Fault of the Typical Half-Speed Mastered LP?

Hot Stamper Pressings of Revolver Available Now

UPDATE 2026

This commentary must be fairly old because we haven’t bothered to play anything put out by Sundazed in longer than I can remember.

The most serious fault of the typical Half-Speed mastered LP is not incorrect tonality or poor bass definition, although you will have a hard time finding one that doesn’t suffer from both.

It’s dead-as-a-doornail sound, plain and simple.

And most Heavy Vinyl pressings coming down the pike these days are as guilty of this sin as their audiophile forerunners from the 70s. The average Sundazed record I throw on my turntable sounds like it’s playing in another room. What audiophile in his right mind could possibly find that quality appealing? (Apparently the guy who wrote this absurd list of records you should buy It has a number of inexcusably at best mediocre and mostly awful sounding Sundazed records.)

But Sundazed and other companies just like them keep turning out this crap. Somebody must be buying it.

So how does the famous MoFi pressing of Revolver sound? In a word, clean. Also not as crude as the average British import, and far better than any Japanese or domestic pressing we heard.

But it’s dead, man. It’s just so dead.

(more…)

MoFi Proves Once Again It Has No Idea How to Make a Good Record

Hot Stamper Pressings of the Music of Women Who Rock Available Now

We recently auditioned the Mobile Fidelity pressing of Learning to Crawl and wrote down our impressions as the record was playing that you see below.

We try to be very specific about the strengths and weaknesses of the records we play, which is why we reproduce our notes — in this case for audiophile records — whenever possible. (There are plenty of shootout notes for vintage pressings on the blog as well.)

The title at the top of our post-it sets the stage for what you are about to read: the specific faults of an “especially bad MoFi.”

Do they make any other kind? Well, sometimes, to be sure, but the good ones are few and far between.

It must be hard to make a record sound this bad, but if anyone can do it, Mobile Fidelity has proven that they are the men and women for the job. Let’s get down to brass tacks.

Side One

Dull drums at intro.
Bass compressed and wooly.
Vocal present and hard.
Everything else recessed.

Side Two

Very dry snare and guitar.
Flat, edgy and lifeless.
Not even clear.
Just shitty.
Lacks bass here too.

Consensus

NFG.

This one definitely belongs in the Mobile Fidelity hall of shame (along with 66 of their other titles). My CD sounds better.

To aid you in understanding just how lost the buyers of these audiophile records are these days — and who am I to talk? — we reproduce the five most recent reviews from Discogs as of 5/2026 below.

(more…)

Double Vision – MoFi Reviewed

Hot Stamper Pressings of Classic Rock Albums Available Now

This title is yet another record that belongs in the audiophile hall of shame.

Like most Mobile Fidelity pressings, it’s better suited to the stone age stereos of decades past.

There is a Mobile Fidelity Half-Speed Mastered version of this album currently in print, and an older one from the days when their records were pressed in Japan (#052).

We haven’t played the latter in years; as I recall it was as lifeless and sucked-out in the midrange as many of the other famous MoFi’s of that period, notably The Doors (#051) and Trick of the Tail (#062), which is perhaps the most lifeless record this ridiculous label ever released.

Is there any doubt that the newer MoFi pressing of the album will be every bit as bad or worse? (more…)