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The Hanze HiFi HAT Turntable Power Supply

Welcome to Hanze HiFi!

I all the time take pleasure in telling you concerning the individuals behind high-performance audio products and HiFi outlets, as very often they are probably the most insightful and knowledgeable of all fanatics about HiFi, telling us about new and exciting audio developments, and possessing a zeal and imaginative and prescient that drives audio performance to that next degree, enriching our HiFi pastime, our music listening, and our lives within the course of.

Hanze HiFi in Zwolle, Netherlands.

Such are the individuals which might be Hanze HiFi, situated in the historic and picturesque city of Zwolle, Netherlands. Hanze HiFi is the type of HiFi enterprise that every audio fanatic wished was just across the nook from their house.

Hanze HiFi selfie with Jaap (technician, left), Johan (proprietor, middle), and Alexander (sales, right).

Hanze HiFi is an enthusiast HiFi company that hosts a wide range of quality HiFi manufacturers, and whose aim is to offer their clients probably the most satisfying house HiFi listening experience attainable.

“We listen to you and your audio wishes, and together we will optimize your living room into the best setting for listening to your music, with the right components for you, for a sensational personalized listening experience.”

In the direction of attaining that finish, Hanze Hifi assists its clients in studying about and listening to the merchandise that may provide them the kind of efficiency they want, at a worth that matches within their HiFi price range, after which assists them in getting their new HiFi installed at house to realize one of the best performance attainable in their house listening area, with the intent of offering listening pleasure for a few years to return.

That’s a superb recipe for glad and glad clients that the majority of us shoppers in the fanatic HiFi world can only dream about experiencing.

Many HiFi fanatics face the troublesome problem of sifting by means of all the advertising of a mess of HiFi manufacturers, studying the evaluations about people who they is perhaps curious about, as they pursue a quest to seek out one thing they may really take pleasure in listening to at house for the long term.

Alexander within the Hanze HiFi turntable room.

The reality is that there is a lot info out there today that it can be a daunting challenge for a HiFi fanatic to really find the HiFi gear that may make them completely happy of their residence music listening over the long run.

Or as Hanze HiFi informed me, “it makes it difficult to see the forest for the trees” in audio, in order that they help their clients in narrowing down their decisions to assist them discover these audio gems that may match their efficiency expectations and give them one of the best residence listening experience potential, and in doing so provide them many years of satisfaction.

Hanze HiFi emphasizes the “art of listening” to assist their clients in experiencing and evaluating numerous HiFi gear to allow them to type their very own opinions about efficiency, and the way necessary those performance variations are to them, and whether or not these differences are value the fee to them.

Hanze HiFi considers this choice and learning course of to be the important thing facet of offering clients a cheerful residence listening expertise and long-term satisfaction from their HiFi system.

To help the selection course of Hanze HiFi offers alternatives for listening periods in listening rooms which are acoustically equivalent to their house state of affairs.

Proprietor Johan in Hanze HiFi’s analog listening room.

Hanze HiFi installs HiFi techniques into their listening rooms, with audio system and gear that match the purchasers tastes, budgets, and wishes, and a Hanze HiFi marketing consultant assists the client in gaining expertise operating the varied products through the listening periods, to allow them to higher understand what the merchandise do and are capable of, and what attributes they value most.

Hanze HiFi believes that spending longer occasions in the listening rooms in order that clients can really understand their preferences and preferences in audio, shifts the client from a quantitative gear-swapping listening expertise that may be complicated, to a qualitative listening experience that really helps them to find whether or not the system being listened to is absolutely what is going to make them pleased for the long term with respect to price, operation, and the standard of the sound copy.

Along with the consultants that may reply questions and assist information clients in discovering what really makes them completely happy in audio, Hanze HiFi also has its own highly experienced technical service group that may present technical help to the client over the long-term to make sure long-term audio happiness.

Within the photograph under you’ll be able to see Jaap working on probably the most complicated turntable from Thorens, the TD224 report changer.

Jaap working on the Thorens TD224 document changer.

Many of us try and undergo this discovery process on our own, resulting in lots of poor decisions and lots of wasted cash, as we attempt to higher perceive what kind of HiFi system will make us completely happy for the long-term.

Hanze HiFi’s employees aiding in this discovery course of saves the client time, money, and frustration, enabling them to focus in on discovering the proper HiFi system for theirs tastes and price range, and the presence and help of a gifted service group helps clients hold their HiFi’s in tip-top shape over long term, making certain long-term buyer satisfaction.

Jaap Pees of Hanze HiFi

As one example of the long-term dedication Hanze HiFi makes to its clients, let me inform you about considered one of Hanze HiFi’s technical specialists, Jaap Pees (under).

In case you are Thorens TD-124 turntable fanatic like I am, you’ve in all probability already heard about Jaap’s expertise related to basic studio & house turntables like the Thorens’, Garrard’s, and others.

Jaap has been working as a hi-fi audio technician for over 45 years now, with the last 20 years at Hanze HiFi. For the last 10 years Jaap has mainly targeted his analysis on basic report players, the way to greatest keep them, and how you can get the most effective efficiency out of those basic turntable designs, which continue to please their house owners with their high-performance music copy many years after their acquisition.

Like all thing’s audio, ultimately these basic turntables would require some maintenance or restoration to carry out at their optimum degree of performance.

Jaap tells me his interest in report players was aroused when he went to overtake a Thorens TD-124 for a buyer and discovered that its special drive practice was not so easy to restore as a consequence of its belt and intermediate wheel transmission, which many Thorens lovers have problem with ultimately.

In case you are like me, you need to make certain your basic Thorens TD-124 turntable is operating in tip-top shape, and Jaap can help you with that, identical to he has assisted me.

I bought a fantastic Artisan Fidelity Thorens TD-124 Assertion turntable, with all the things restored to perfection, and with many high-quality performance upgrades installed into it to get the absolute best efficiency out of it.

Nicely, being the geeky basic HiFi fanatic that I am, I was not as proud of my Thorens TD-124’s performance as I had hoped to be, because it fell in need of the type of exceptional efficiency provided by my Basic Turntable Firm / Artisan Fidelity Garrard 301 (which you’ll be able to read about HERE), and I had been making an attempt to determine if there was a method to bridge that performance hole.

I had mentioned this aim to my buddies on Facebook, and a few very knowledgeable people, Jaap Pees (Hanze HiFi) and Chris Harban (Woodsong Audio), responded and advised me that it must be no drawback to get the identical degree of efficiency out of my Thorens TD-124 that I get from my CTC Garrard 301, with just some straightforward and comparatively inexpensive modifications consisting of a brand new platter adapter (Woodsong Audio), turntable mat (Spec Company), and a spring isolation package for my Thorens TD-124’s motor (Hanze Hifi).

I followed Jaap’s and Chris’ recommendation and was slightly astounded by the magnitude of performance enchancment offered by these three easy additions, which had put my Thorens TD-124 on a degree of efficiency just like my hot-rodded Garrard 301, which you’ll be able to learn all about within the evaluate HERE.

Jaap also recommended that a Hanze HiFi HAT Turntable Power Supply would improve the efficiency of my Thorens TD-124 even additional, and requested me if I’d like to offer one a pay attention and evaluation it for Constructive Feedback.

“Yes, indeed I would!” was my reply, so Jaap despatched me a Hanze HiFi HAT Turntable Power Supply to take heed to and evaluation for Constructive Suggestions.

Outboard Turntable Power Supplies

Before I talk about the Hanze HiFi HAT Turntable Power Supply intimately, let me supply a primary primer on why you may need to think about using an outboard energy provide on your turntable.

I feel probably the greatest ways to elucidate how an outboard power provide could make a turntable sound higher is to talk about how a turntable works to play again music from a vinyl document.

Hint: It’s all about vibrations.

To start with, whenever you and your band go to the recording studio, you play your music in front of microphones, and microphones work very similar to your personal ears in the best way they reply to vibrations from music.

Your eardrum vibrates as it’s struck by the musical waveforms, and people vibrations are transformed to an electrical signal that is interpreted by your mind as music.

Similarly, when a microphone’s inner diaphragm is struck by musical waveforms it vibrates and turns those vibrations into an electrical signal, which are then encoded onto analog tape (or converted to digital media).

1951 Shure 55S microphone, photograph courtesy of Wikipedia Artistic Commons. Photograph by Holger Ellgaard.

So, as the musicians play the music, the vibrations of the music are converted by microphones into an electrical sign that’s saved on analog tape or digital media, then the electrical sign from the grasp is shipped to a chopping lathe where the cutter head converts the electrical sign back into vibrations—or modulations—because it cuts a continuous groove into the lacquer. A “metal master” is constructed from the lacquer, a “mother” is then created from the metallic master, a “stamper” is created from the mom, after which vinyl data are made utilizing the stamper. I’ve simplified the process so much, however hopefully you get the thought.

So now you’ve received your document in your palms, and also you place your document in your turntable, after which lower the stylus, which is vibrated by the modulations within the report’s groove, and turns these vibrations back into an electrical sign that you simply hear as music coming out of your HiFi system. Once more, I’ve simplified the playback course of quite a bit, but you get the thought.

Okay, now you’ve gotten the fundamentals of creating data and of report playback, which boils right down to being all about turning the “good vibrations” of music into an electrical sign after which back again into music.

So, now back to our unique question of why you may need to think about using an outboard power supply on your turntable—why would you need to do this?

The brief answer is to scale back or remove the non-musical “bad vibrations” from the mains energy provide and the turntable motor that degrades your turntable’s cartridge’s performance, as any constancy misplaced on the supply can’t be recovered down the line by your audio system electronics.

The phonograph cartridge picks up all vibrations, whether they’re from the modulation in the report’s groove, or from footfalls or floor-borne vibrations, from the mains provide, or from the turntable motor itself.

All of those sources of non-musical vibrations degrade the signal-to-noise ratio of the music sign on the phonograph cartridge, decreasing the fidelity of the music you hear from your HiFi.

So, the moral of this story is that phonograph cartridges are very delicate to vibration, and an outboard turntable power supply reduces vibrations that can be transmitted to the turntable’s phonograph cartridge, thus enhancing the quality of the sound.

Most of you reading this article are accustomed to the thought of putting a turntable on a vibration decreasing stand or isolation footers (or both) to scale back vibrations from footfalls or other floor-borne vibrations, however different main sources of vibration—the mains voltage & turntable motor itself—may be addressed by the addition of an outboard energy provide, which offers the turntable motor with a regenerated low-noise AC provide, and permits you to decrease the line voltage going to the turntable motor, which lowers the amount of vibration from the motor, and leads to an improvement to the sound quality as a consequence of higher phonograph cartridge efficiency.

The Hanze HiFi HAT Turntable Power Supply

The Hanze HiFi HAT Turntable Power Supply is a substantial piece of finely crafted HiFi electronics measuring 8¾ inches vast, by 5 inches high, and is 12 inches deep, and weighs in at approximately 11 kilos / 5 kilograms on my utility scale.

The casework for the HAT turntable power supply is sturdy aluminum plate, with the entrance panel roughly 4mm in thickness, the aspect panels barely lower than 4mm in thickness, and again, prime, and bottom panels roughly 3mm in thickness, all held collectively by machine screws.

The HAT turntable energy supply is constructed to a degree of ruggedness and quality that many amplifiers can be jealous of.

From left to right on the entrance panel (above) you see the facility change, voltage meter, and torque adjustment potentiometer.

On the again panel you possibly can see the middle plug—a European-style Sort F socket—that outputs AC to the turntable, and on the best aspect is a normal North American IEC male AC inlet plug for the wall AC.

In the specific unit sent for evaluation, the central plug is a European-style Sort F socket, as that is the first HAT Turntable Power Supply that was tailored for the 60Hz / 120-volt North American power grid from the traditional European version that Hanze HiFi provides, however future fashions shipped to North America will function commonplace North American IEC male AC inlet plugs.

For this evaluate I’ll be using a plug-in adapter so I can use my turntable AC cable with a North American termination with the European-style Sort F socket.

Now permit me inform you slightly about how the Hanze HiFi HAT Turntable Power Supply happened.

Jaap informed me, “Since all vibrations in record players start at the motor, I started looking for books explaining how the fractional motors work, as these are the kind of motors that were used in turntables. During this investigation it became clear to me that the motor in the turntable is primarily responsible for the speed and the vibrations.”

“To be able to measure this, I went looking for a reference in the vibration measurement area and ended up with HP FFT signal analyzer and Bruel & Kjaer measuring equipment. Since industry has already made many measurements of standard electric motors, I also applied these techniques to the fractional motors in turntables.”

“The vintage players mainly use three types of motors: the shaded-pole motor, the hysteresis-synchronous motor, and the capacitor induction motor. It is probably too much to explain the operation of each of these motors here, but in the Thorens TD124, the Garrard 301/401 (below), and the Lenco L75, the shaded-pole motors are used.”

“What is important to know is that the speed is determined by the voltage, frequency and load offered.”

“Previous research on standard motors has already shown that the quality of the mains voltage offered influences the degree of vibration and temperature of these motors, so we decided to do some research into this and to measure it, and more importantly determine how it affects the sound quality.”

“Together with my friend Richard—together we form the Audio Team—we started to experiment with turntable power supplies for induction motors, as we already knew how much influence power supplies had on our tube amplifiers.”

“The first results were really shocking, and we certainly did not expect this. A better power supply translated into blacker backgrounds, better low-level resolution, the grainy sound in voices was gone, and the soundstage was more stable and with better definition.”

“The main reason for this I think is because the mains supply has been contaminated for many years, and there are many more frequencies present in it than just the 50 or 60Hz, in the form of very strong harmonics.”

“Measurements that I have done show that these can go up to 3kHz, and the voltage and frequency also varies. By offering a clean and stable newly generated voltage, the motor will vibrate less and the speed will be more constant.”

“Do not forget that the turntable is dealing with vibrations that are transmitted through the chassis to the tonearm arm as well as via a belt—and the intermediate wheel—to the platter, and thus there is influence on the speed in the form of modulation in a kind of frequency wobble, called wow and flutter.”

“The former can be suppressed by using optimal decoupling (above, note the springs on the motor mounts), but the latter is a lot more difficult. The motor is made up of a fixed part, the stator that takes care of the magnetic field, which causes the so-called rotor to rotate. This rotor is often directly coupled via the intermediate wheel to the platter or, as with the Thorens TD124, via a belt to the intermediate wheel.”

“Here it is already determined how quiet and stable the record player will be and it is therefore logical to ensure that the motor is optimally controlled. In the optimum theoretical case we have to deal with two types of vibrations, the first of the rotating rotor speed between 23 and 30Hz, depending on the mains frequency, and the voltage.”

“The second most disturbing vibration is the so-called “two times the mains frequency vibration,” 100Hz at 50Hz, or 120Hz at 60Hz. It’s in all probability too much to go into the explanation here on how it arises, however it is all the time present with motors which might be fed from a single-phase mains provide.”

“However, not only a 50 or 60Hz sine wave is offered, but also the derived harmonics that are very strongly present. These cause extra vibrations, and an unstable speed that is partly transferred by the rotor to the intermediate wheel or belt.”

“There’s some damping right here for the vibrations, but not for the wow & flutter velocity variations. The plateau partially compensates for this, but wow & flutter spectral measurements show that they are still current.

For velocity control, the Thorens TD124 and Garrard 301/401 use an eddy current management that also introduces further vibrations. The more it slows down, the more the vibrations.”

“By setting the output voltage of the power supply a little lower, this control does not have to work as strongly and therefore produces fewer vibrations. However, an output voltage that is too low is at the expense of the torque, which does not benefit the sound.”