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Showing posts with label audio review. Show all posts
Showing posts with label audio review. Show all posts

August 17, 2022

Spirit Torino's Super Leggera Headphone Review

I’ve been into HiFi audiophile headphones for a couple of decades now, and the hobby today is probably the biggest it’s ever been. While headphones were invented in the late 19th century, those intended for musical reproduction got their start in the late 50s with the Koss Stereophone in 1958. Koss released numerous quality headphones for decades and remained very popular. In the early 90s, higher-end headphones were having a renaissance of sorts with Sennheiser making the groundbreaking HD580, Grado releasing their SR series, and Sony introducing stellar products like the CD3000. In the 2000s we had AKG release the K701s, Sennheiser the HD600s, Grado the metal-bodied SR-325s, and Beyerdynamic refreshing and marketing its DT series for recreational listening. Into the 2010s and the options have exploded far beyond belief with many more players in the game and brands accommodating many different tastes. One company that really stands out to me is Grado, a small family-run business operating out of New York. 

Grado (pronounced gray-doh) is what I’d consider a conservative business that hasn’t made many changes as the headphone sector has turned into a whirlwind of competition. If you look at the SR125 which was introduced in 1993, it looks nearly the same today, and I’d imagine it is still produced by hand the same way it was back then. There are the plastic grills with discs in the middle noting the model number, plastic gimbals and angled metal rods attaching them to the plastic rod-blocks marked “L” and “R” and looking inside you can see the driver and the wires running to it soldered by hand.

The Grado Hemp Headphones
There’s something very charming about small businesses making hand-made goods in this day and age where everything is becoming automated; that’s probably what I like best about Grados. They refuse to conform and continue their own path, stubbornly ignoring pleas for removable cables and more comfortable pads. It makes them polarizing, with some people dismissing them as cheap looking or antiquated compared to new planar magnetics and dynamic headphones that fully cover the ears, while others embrace their quirks and often buy more than one.

If you haven’t heard a Grado before, they have a general house sound. That would be a little light in the lowest bass, fun punchy sub bass, neutral mids and crisp, forward high energy in the upper mids and highs. As you go up the line they become more resolving and refined (generally). New additions to the stable such as the limited Hemp release and the RS-1X which incorporates hemp in the wood body are voiced a little more warmly which makes them great for longer listening sessions free of fatigue. Just about anyone who’s listened to a Grado will tell you they are great for rock music as you can really feel the energy come through the music.  

So if you try to distill what makes a Grado a Grado and you remove all the intangible brand-equity that comes with a family business making hand-made goods, you’re going to be left with the fairly unique use of rudimentary gimbals with fixed rods that are inserted into rod-blocks which are held by the headband, along with 44-50 millimeter dynamic drivers in a smaller driver cup that doesn’t fully cover the ears. 

Unique engraving options

Andrea Ricci, a fellow Grado enthusiast, started modding headphones using Beyerdynamic and Grado parts in the late 2000s. Creating a company called Spirit Torino, he began offering items for sale in 2016 including the Spirit Labs MMXVI which were Grados with custom engraved metal cups, a new headband, specially tuned SR80e drivers and a custom cable. Other headphones were to come in the following years like the Twin Pulse with isobaric motor unit. Now a full-fledged company with more mature products and distribution outside of Italy, Spirit Torino has become a headphone company that audiophiles should consider when selecting among the other high-end brands available.

While once a curiosity, I was finally able to obtain a demo pair of Spirit Torino headphones for audition. The Super Leggera, which probably resemble Grados the most out of Andrea’s offerings, are nearly all metal, from the cups, the rod-blocks, the rods, the driver grill, etc. The cups are partially anodized and have been CNC engraved. There is a generously sized suede headband with visible stitching and the pads protrude out the way a Grado G cushion would. The pads however are fenestrated suede which are probably about the size of Beyerdynamic DT series pads and look like an offering from Dekoni. The rod-blocks utilize two Allen screws, one holding the headband, and the other allowing you to set the position of the rod more permanently. The second feature is especially important given the weight of the cups, and something that would be welcome on Grado’s larger metal cupped models.


The Spirit Torino with luxurious suede headband and handy locking screws 

These features, along with the weight, come together to give a sense of quality / luxury. Another welcome feature is a removable cable, a feature that really makes far too much sense not to include. Everyone is using different single ended or balanced connectors, everyone has a different space between them and their gear, and if you have pets or are just hard on your gear the cable will likely get damaged, so an easy replacement goes a long way.  

If you like customization, you’ll be very pleased that Spirit Torino headphones come in a variety of different color cups and headbands. Plain black doesn’t get to have all the fun like usual, with vibrant reds, blues, and intricate engravings adorning some models. I get the impression that Andrea really enjoys the CNC machine as so many of the parts have been fashioned with it. I believe Grado also uses a CNC machine for cutting/engraving, however it is limited to the cups.

Beautiful CNC work everywhere you look.

So that’s all good and well, but how do they sound, and how do they stack up against Grados?

This review will be comprised of my initial audition of the Super Leggera, and after I had sent over to Andrea in Italy to have it updated to the latest revision.

My first impressions of the non-upgraded version were very good. I found I liked them best with Todd the Vinyl Junkie (TTVJ) flat pads. Sub-bass was very powerful and succinct, larger than life and probably a bit too much for those looking for a balanced headphone. There was a strong authority to entire sound range where everything was dominant and in-your-face (or ears in this case). The presentation was full, warm, and not much in the way of soundstage. The clarity of the highs is usually reduced a little bit when using the flat pads with Grados, which is also the case here, but many of us like the tradeoff. The early version Super Leggeras are definitely a fun sounding headphone with the flats, but clearly not as refined as something like a Focal Utopia.

Upon speaking with Andrea who runs Spirit Torino, he let me know that there are a couple of important updates that have been added to the units, including a “neodymium magnet enhancement of 3.8 kg” on each driver, and a “Nen Ventilarion” pad system, which may just be a bad Google translation of ventilated. After a short trip to Italy, these two changes had a profound impact on the sound, which went from Ibiza dance club to something more akin to a symphony hall and reminding me of the Grado GS presentation.

If you’re not familiar with the GS-2000e, it doesn’t have the peaky upper midrange that defines the Grado “energetic” house sound, but there is a slight peak there. There is also a pronounced sub-bass energy that seems present with nearly all Grados. The overall sound is both crisp and full. Comparing the GS-2000e ($1,399 USD MSRP) to the Super Leggera ($1,600 USD), the transition from subbass to midrange is the most stand-out change (while still being a little on the punchy). I believe adding the weight to the back of the driver assists to make the transition much smoother. Also present was a wider soundstage, while not as wide as something like the hybrid driver Enigma Acoustic Dharma headphones, there was more of a palpable space, likely created from the new ventilated / fenestrated pads. Other than that, the sound seems a little crisper when it came to guitars, but relatively similar.

You might be wondering why changing headphone pads makes such a marked difference. The sound of dynamic drivers like Grado and Spirit Torino can vary wildly depending on how close they are to your ear. As the driver gets closer to the ear, bass and fullness increase dramatically while treble clarity suffers and soundstage shrinks, and when it’s pulled away all these facets are reversed. Thus, it’s very important to get the position right. I can tell Spirit Torino went to great lengths to not impair the sound by have a very thin fabric between the ear and the driver that is barely there and having the circumaural pads (pads that cover the ears completely) get the driver at a very specific distance from the ear canal. 

Note the perforated cups and attractive CNC-cut grill

The verdict? Honestly, I liked both the original and latest version of the Super Leggera for different reasons. The original made thumping electronica and synthwave wildly exciting, and the latest version worked much better for acoustic guitar and indie rock genres I enjoy such as shoegaze and prog. Compared to the GS-2000e the latest version offers a similar sound with a little more refinement and is built so impressively it’s hard not to gawk at them before putting them on your head. At $1,600 USD I believe it is priced competitively for the sound quality, and very reasonable when you consider the build quality.

Justin of Headamp has been in the headphone hobby 20+ years now and is the U.S. distributor for Spirit Torino. I’ve met him at a few meets and he’s a great fellow. Drop him a line at Headamp.com if you’d like to check out this exciting new offering in the headphone world. 


Please note the Spirit Torino Super Leggera was provided to Zynsonix Audio LLC at a discounted rate for an honest review.

June 1, 2021

Emotiva BasX A-100 Stereo Flex Amplifier Review

This is a review of the headphone output of the Emotiva BasX A-100 Stereo Flex Amplifier. If you’re not familiar, Emotiva makes some great audio products at incredibly attractive price-points. They offer a host of speakers, headphones, amplifiers, processors, and other gear. I have owned their portable DACs which are a tremendous value; I ended up parting ways for lack of need. They were quite good sounding though and offered a robust build quality. I currently have some of their power equipment which is also well built. If I were a home theater afficionado, I’d likely have even more of their gear.

Emotiva has a value-oriented 2 channel amp called the BasX A-100. Normally it is a speaker amp providing 50 watts per channel into 8 Ohms and 80 Watts per channel into 4 Ohms, which is plenty for most setups. What is also pleasing for those with limited in-house real-estate is that the unit is half width, so 8-1/2” wide x 3.125” high x 15” deep. That saves half of your shelf for another piece of equipment/some headphones or something else.

Perhaps what is most interesting about the A-100 is that it can be used as a high-powered headphone amp. Granted, very few people would need this capability, but it is there. The unit does need to be internally jumpered for this operation as it is unsafe for standard headphones. The output is:

8 Ohms:  50 watts / channel
33 Ohms:  12 watts / channel
47 Ohms:  8.5 watts / channel
150 Ohms:  2.6 watts / channel
300 Ohms:  1.3 watts / channel
600 Ohms:  0.6 watts / channel

So, what headphone owners would be interested in this feature? Owners of low-sensitivity headphones like the HiFiMan Susvara, HiFiMan HE-6 or HE-6se, the HEDDPhones, the Abyss AB-1266, and others.

Normally I use an external box with some high quality resistors to convert a speaker amp’s output for headphones (it has some protections built in for amps with output transformers) but given the low cost of the A-100, it was a no-brainer to at least try it out.

Starting with the good news, the A-100 produced plenty of usable volume with the HE-6se and drove them with spades. There are some caveats though. The first, I noticed the amp takes a bit of time to warm up. When listening immediately, the midrange wasn’t well defined. After 10-15 minutes this seems to go away. Second, I found the sound to be fairly cool/bright and slightly lacking on the low end. This isn’t a big deal if you don’t mind EQing. I found reducing the upper midrange and increasing the low range to help make the sound more agreeable for my personal preferences. If you are listening from a computer, you can use the free program PEACE to make adjustments, if not, you can pick up something like the JDS Labs Subjective3 or the Schiit Loki. Neither of these offer an ideal level of control to get the A-100 exactly right (for me), but they are well made and get the job done affordably.


Running the HifiMan HE-6se with the Emotiva A-100


It seems that perhaps the weakest link of the A-100 is its potentiometer (volume control). Early into turning it, there was very noticeable channel imbalance. This seemed to subside quickly as the volume rose; however, it is important to note. A good potentiometer can be costly, so this was likely a price point issue. Given an Alps Blue Velvet (RK27), a frequently used entry-level potentiometer for audio, is around $12 per piece in bulk, it would be very hard to implement at this price level.

You get a lot for your money in terms of parts and build


Overall, the Emotiva BasX A-100 Stereo Flex Amplifier is impressive at its price point given the heft, solid and attractive build, and ability to send 50 WPC to a pair of headphones. Also the internal rectified power supply (no wall wart) is typically reserved for more expensive gear. If you were in the position to have purchased some HiFiMan HE-6 or HE-6se and had very little left over for a suitable amp, this is probably the only game in town, aside from potentially the balanced output of the Schiit Magnius which I haven’t yet tested.

If you were only interested in powering speakers and don’t mind purchasing used gear, you might want to cross-shop an older receiver from a reputable brand like Yamaha, Onkyo, Outlaw, or Denon. If you are DIY-minded, a chip amp like Akitika is a good route to investigate for speakers.   

If you are trying to power low-sensitivity headphones via a speaker amplifier, please check out the CBOX at Zynsonix.com. It provides a safe consistent load for your amplifier while delivering the juice your headphones need. 

March 30, 2021

Zynsonix Headphone Cable Video Reviews from AB's Sound Advice

Here are a few video reviews of Zynsonix headphone cables from AB's Sound Advice AZ/AU. You get to enjoy a brief review and Ashley's nice New Zealand accent all at once. These videos are also a great way to check out the different sleeving options to see which you prefer. 


Ballista custom headphone cable for Denon headphones featuring denim remix sleeving and balanced 4 pin XLR


Ballista custom headphone cable for Sony MDR-Z7 headphones featuring soft black nylon sleeving and balanced 4 pin XLR


Ballista custom headphone cable for Klipsch HP-3 headphones featuring Viablue sleeving and balanced 4 pin XLR


Be sure to check out AB's Sound Advice Channel for more great reviews on audio gear. 


November 15, 2019

Linear Tube Audio MicroZOTL MZ3 Headphone Amp

The Best Headphone Amp I Have Heard At Any Price

Like most of you, I’ve been doing this audio thing for a while. I’m privileged to be in the MD/DC/VA corridor so I’m able to attend meets and audio shows regularly and sample a lot of different equipment. Generally, at any show there’s plenty of gear that sounds very good, and there are a 2-3 special pieces of equipment that leave a strong, lasting impression. These are usually priced like a new car, but every now and then you find a performance outlier, something that’s disruptive in its price range and should frankly cost far more. One such performance outlier is the subject of this review.

About a year ago I attended Capital Audio Fest (goes by CAF for short) which has a small but ample headphone presence. There I saw Linear Tube Audio’s booth and wandered over. I was familiar with LTA’s MZ2 headphone amp based on David Berning’s ZOTL technology, having previously listened to it at a meet in its stand-alone state without the power supply upgrade. The unit’s visuals with transparent top harkened back to the original blue Berning headphone amplifier I listened to at a meet many moons ago (its Plexi side window presented the unique topology like a PC enthusiasts rig).

New at the booth for 2018 was a pre-production MicroZOTL pre-amplifier with a headphone output. I took a look and was a little dismayed it didn’t have a balanced output, but I sat down and had a listen anyway, plugging in a nearby MrSpeakers Aeon Flow (if you’re not familiar, it’s a very good value planar magnetic headphone under $1K) and choosing a song on Tidal. Everything sounded good and well until I heard the strumming of a guitar. It’s hard to describe how incredible it sounded, just crisp, natural and telegraphic, like the acoustic guitar was right there next to me and I needed to turn to my side to confirm it wasn’t. The acoustics of the song had more presence and detail than I was accustomed.

The gent running the booth, Josh Levi, let me know that MicroZOTL pre-amplifier was based on their new MZ3 headphone amp which would be out shortly, price TBA. Not being content with only a smattering of details, and knowing LTA is a local brand, I reached out to owner Mark Schneider and scheduled time for a visit to the LTA listening room/manufacturing area.

Mark has a calm and approachable demeanor and is a true engineer. I’m quite certain he has a complete virtual catalog of all the various audio parts available in his brain. We chatted at length on our preferences for various audio jacks, capacitors, resistors, what made an audible difference and what didn’t. Given the length of time I’ve been experimenting with various audio builds, I was almost perplexed that Mark had tried as many different items that he has.

Besides the parts, Mark was experimenting with myriad other design elements, picking up small but noteworthy improvements in sound. From expensive ceramic circuit boards to non-magnetic transformer covers, everything was there for a reason… sonic improvement. At this point I realized nothing here was getting phoned in, these devices were meticulously designed and likely engineered more carefully than most audio equipment on the market.

If this were the only thing going for LTA, they’d still be ahead of the pack, but the most unique thing about these amps is the technology. David Berning’s technology is completely unique. You will not find anything like it on the market. I’ve put together countless amps, solid state, tube (both with output transformers and OTL), hybrid, etc. The innards of MicroZOTL amplifiers look completely alien, with hand-wound magnet doughnuts and small towers of diodes residing above them flanked with wires on each side. I’ve read the white paper on how this works, but quite frankly it went above my head. Ultimately, for you and I the listener, we can say “who cares what’s going on inside, all I care about is the sound”. There’s certainly nothing wrong with that approach, but some niceties with this design are reduced heat, much longer tube life, and the units aren’t overly heavy from bulky output transformers. They also have a remarkably black background that you won’t hear in most tube amps.
Love the volume control display

Long story short, I helped out Mark with some marketing for several months while he finalized the MZ3 and a few months ago took one home. To say that the MZ3 is better than my highly modified Bottlehead Mainline is an incredible understatement. Not that I was dissatisfied with the Mainline, I found it to be a nice step up in terms of clarity from the Bottlehead S.E.X. and it held its own against other amps like the Torpedo, Budgie S.E., a high-voltage octal Aikido build and other various amps that have come through the listening room. The difference, however, is truly palpable. It’s very rare that I’ve changed a piece of gear and it’s just night-and-day better… like almost two decades ago when I shelved some $30 Sony headphones for the Sennheiser HD600s, or when I set aside a pair of HD650s for my first planar magnetic headphones, the Audeze LCD-2.
The MZ3 is not lacking in connectivity

Listening with my Audeze LCD-4, the MZ3 has a sound that is slightly more neutral than a typical tube amp, but it is still natural sounding. I personally would consider it neutral; others may consider it ever-so-slightly warm. It’s also, full, enveloping, and easy to get lost in the sound and just not think about anything else. Soundstage is precise and crisp. Every detail is there but not obtrusive or overly sharp. I believe what this amp has more than anything else is it just sounds so natural. I was starting to lose interest in headphone listening to speakers, however the MZ3 rekindled that joy so acutely that I often lose track of time playing track after track.

Bottom line, this is a phenomenal amp, truly the best headphone amp I have ever personally heard at any price. It is not the cheapest amp; however, the price is incredibly reasonable for the performance and all the detail that went into its creation. It’s not a balanced amp, but after hearing it, I honestly don’t care. I think building headphone amps can finally take a rest, as I don’t think I could ever make one that sounds this good. If you are a headphone enthusiast and can swing it, I highly recommend auditioning the MZ3. Even if you need to double your budget, save yourself some time and buy your forever amp. I know if for whatever reason I suddenly needed to rebuild my rig from the ground up, I would be at Mark’s office tomorrow with my credit card in hand.

PROS
  • Beautiful, neutral and engaging sound
  • Super black background
  • Attractive chassis
  • Cool, satisfying haptic-touch volume control
  • Includes a remote control
  • Has speaker outputs for high-efficiency speakers
  • Multiple inputs and pre-amp outputs
  • Price is very reasonable for performance level

CONS
  • Not a warm and syrupy tube amp if you are looking for that
  • Only comes in black

Note: I didn't get into some of the features of the amp as I'll only be using it as a headphone amp with its standard settings using the controls on the chassis... but others will be pleased to know there are three selectable inputs, a pre-amp output, speaker outputs for VERY efficient speakers (the output is about 1 watt), and a remote control that allows you to switch inputs, adjust balance, etc.

Setup:
Audeze LCD-4 Headphones w/Ballista Headphone Cable
PC w/Amazon Music HD Unlimited > Chord USB Cable > Schiit EITR > 110 Ohm Zynsonix Coax Cable > AudioNote DAC 2.1 > Zynsonix RCAs






Disclosure: The author provided marketing services for Linear Tube Audio from Sept 2018 to Mar 2019 in exchange for product credit. All views herein are the true opinion of the author and are not the result of any compensation or business arrangement.

June 23, 2017

Burson Audio Opamp Review - Supreme Sound V5 / V5i

Op-amps, or operational amplifiers, are ubiquitous in solid state amplifiers. These little integrated chips are simple little building blocks designed to work in a wide range of electronics such as PCs and other devices. For those of you not familiar, op-amps are like vacuum tubes for the solid state world. Most manufacturers use sockets so the op-amps can be swapped, and each have a difference sound signature (e.g. warm, revealing, etc.). Some have voltage requirements that make them only compatible in certain designs, etc. Some are affordable (the LM4562 which runs less than $1), and some are expensive like the popular $25 Burr Brown OPA627.

Burson Audio is a company on a very short list of providers of discrete op-amps. Rather than having a bunch of teeny tiny components shoe-horned in a chip the size of a fingernail, Burson creates devices that plug into op-amp sockets that use a fully discrete set of diodes, resistors, etc. I remember my first purchase of several of their discrete op-amps  roughly six years ago, trying to breath some additional life into a Music Hall DAC. While their first iterations weren't super easy to install, they made a world of difference in the sound department. Everything was much more natural and effortless sounding than the stock op-amps which I believe were mid-grade models from Texas Instruments.

Fast forward to today and we have the Supreme Sound V5 and V5i Opamps. The V5 features fully discrete components including 0.5% tolerance metal film TKD resistors, hand-matched FET transistors, and a sleek looking red cover.

The Burson V5 (left) and V5i (right) in their packaging



Note the size difference between the two units

A fixed 8 pin DIP socket makes installation much easier

It's also a smaller form factor than the originals, which is crucial for installing in tight circuits / spaces. The V5i is a hybrid of sorts which includes both IC and discrete components, but is much smaller and should fit in virtually any build. Do note that these units can only replace op-amps as noted on the Burson site:

Dual Op-amps:
AD823, AD823AN, AD8066, AD8620, AD712, AD827, C4570, JRC4556AD, JRC4580, JRC5532, JRC5532D, JRC5534, LF353, LM4562, LME49860, LM833N, MUSES8920, NE5532, NEC4520, NEC4570, NJM2068D, NJM2114, NJM2214D, NJM4558, NJM4558D, NJM4560, NJM5532, NJM4558P, OP275, OPA1612, OPA2277PA, OPA2132, OPA2134, OPA2604, JRC4558, RC4558D, RC4558P, TL052, TL072, MUSES01, MUSES02, MUSES8820, MUSES8920, MUSES8832, BA15532

Single Op-amps:
NE5534, LT1122, TL071, OPA134, OPA627, AD811,AD829, AD844, OPA604, AD8610, AD711, AD797, LME49990, LME49710

Installing them in a unit that is not compatible could cause undue stress on the components / oscillation, etc.

More to come...