Furutech GT40

I always enjoy teasing our publisher about the validity of five-figure gear and his recent obsession with the dCS Paganini stack.  Sure, it’s great for $60k – it should be for that kind of money.  But what about something for the budding audiophile, or even the veteran audiophile who has to live within a reasonable budget?  As I was pleading my case upon the last visit to the TONE studio, he just smiled and placed the Furutech GT40 in my hand.  “Check this out. It’s a phono preamp (MM and MC, no less), an analog-to-digital converter (24 bit/96khz) and a DAC.  Has a pretty good headphone amp, too, and you can use it as a linestage.  How’s that for just under $500?”

To be exact, $480. Though it weighs only about a pound, it feels solidly built with a nicely finished case and precisely machined volume control.  Around back, there is a pair of gold-plated RCA jacks that can be switched between MM phono, MC Phono or line level for the single input.  There is also a USB 2.0 input and a socket for the 9V AC wall wart.  That’s how they keep it so small – no power supply under the hood.

It really does it all

After putting the GT40 through its paces one function at a time, I found that it performs all of its tasks well and has no weaknesses.  The DAC and phono stage alone are easily worth the asking price.  Breaking this down, what kind of a phono stage would you get for $120?  Or DAC, Headphone Amp or ADC?  The GT40 is a bargain indeed, and after spending about an hour with it, you can see why we awarded it one of our Product of the Year awards in the budget category.

Keeping in the budget-system mode, the GT40 was used in a system comprised of a pair of Vandersteen 1C speakers, Technics SL1200 turntable (with Grado Red MM cart and Denon 103 MC cart) along with a recently refurbished Dynaco Stereo 70 and Dynaco PAS 3 preamplifier.  The GT40 was also used with a handful of aging CD players to see how it performs as an upgrade, as well as my HP Netbook to see well it captures and plays back digital files.

Gives great phono

After reviewing more than my share of inexpensive phono stages this year, I’d easily pay $400-500 just for the GT40, if it would only perform this function.  MM performance is good, but the MC performance is even better. Or perhaps the synergy between it and the Denon 103R cartridge was amazing.  This tiny preamp had great dynamics and drive, and my inner tweakophile kept wondering what the GT 40 would sound like with a massive power supply. As this had to be returned to Furutech, I kept the soldering iron safely locked away.  Playing a few of my favorite Joni Mitchell records, I was highly impressed with the lack of grain that was present.  While the sound wasn’t as warm as a tube phono preamplifier, it was definitely not clinical and dry.  Always good news at the lower end of the analog spectrum.  And thanks to no vacuum tubes under the hood, the GT40 is extremely quiet.  Quiet tube anything means a sophisticated power supply, and you can only get so much for five hundred bucks.


The Digital performance, both for capture and playback, was equally impressive.  The GT40 easily had enough resolution on tap to distinguish between my latest treasures from HD Tracks and their 16/44 equivalents.  The coolest thing about the GT40, though, is that you can use it as an analog-to digital-converter, going straight from your turntable into the sound-capture program of your choice.  A free download of Audacity did the job nicely and kept the cost of digitizing vinyl reasonable.  Again, if you’re looking for a modestly priced ADC, the GT40 is worth the asking price if you do nothing more than this with it.

A linestage too?

As much fun as it was trying out the GT40’s functions, I think the most fun I had with it was driving my Dynaco Stereo 70 direct.  It had no problem driving a 10-foot pair of DH Labs interconnects from the shelf where my SL-1200 resides, and it was a great conversation starter.  None of my more musically inclined buddies could believe I was running my system with “that little thing.”  For an audiophile on a tight budget who would like to use a budget turntable for analog and their laptop (or perhaps a Wadia 170i) as a digital source, the GT40 is tough to beat.

As mentioned at the beginning of the review, there’s a headphone amp as well, which leads to another great use for the GT40; it’s the perfect desktop component.  Thanks to the small size, there’s no desk on which it won’t fit, and if you live in cube world, it’s easy to slip in your briefcase and take home at the end of the day.  All the nerdtrons at work were very jealous of the GT40/Grado RS-1 combination; I had to bring it home with me at the end of the day or it would have disappeared.

A definite overachiever

The Furutech GT40 could very well be one of the best bargains in high-end audio today.  I heartily suggest buying one ASAP before Furutech decides to raise the price.  If they put it in a bigger box and tripled the price, you’d still be impressed with it.  And those of you with five- and six-figure systems, you need one, too.  You’d be amazed at how handy it is to have a DAC, ADC, phono preamp, headphone amp and linestage all in one tiny box.  Our publisher and I will probably have a wrestling match to decide who gets to keep this one!  – Jerold O’Brien

Furutech f-TP615 AC Power Filter/Distributor and Alpha PS-950 Power Cords

Clean power is always at a premium in a hi-fi system, and Furutech is one of the leaders in the field. Its f-TP615 works overtime in my system, where I never seem to have enough outlets. Performing in concert with Furutech’s top PowerFlux power cords, the f-TP615 provides an excellent way to keep gear supplied with the high-quality power it requires to be its best.

If you are a student of the “last wire” school of thought, and claim that the journey of power from the generating station to your system travels through junk wire—and that adding five feet of premium wire and connectors won’t change things—I won’t try to convert you. However, if you believe, like me, that AC power in the wall is more like a gigantic well, full of murky water into which one taps to power a system, read on. Remember, your hi-fi system essentially modulates the AC power coming into the box with audio signals that go to your speakers. The cleaner the source, the cleaner the result.

While I have tried the f-TP615 in several different systems, all yielding excellent results, it best proves its mettle supplying power to my digital front end, the four-box dCS Paganini stack.

Digital Enhancement

Swapping all four stock power cords with PowerFlux and f-TP615 instantly improves the dCS’ performance in two areas: Lowering the noise floor and removing hash/grain from the presentation.  All too often, we mistake the harshness of digital playback for grunge in the AC line.

Spinning David Byrne’s live performance with Caetano Veloso at Carnegie Hall illustrates the aforementioned effects. The sparse yet dynamic recording, featuring the two artists playing acoustic guitar, sounds fine when utilizing stock cords. But a quick switch to the Furutech components reveals more air around the guitar strings, a richer tone, and more body to the audience’s applause. It doesn’t hurt to have the Sonus Faber Aida speakers helping convey the very nuances the Furutech products bring to the dance.

Extended listening makes it easy to get used to the newfound liquidity, and it only takes a quick exchange back to the original setup to hear the soundstage collapse on itself. Everything sounds smaller, less focused, and as if I’ve moved my system to a smaller room.

Next Step, Analog

Anxious from noticing the improvements to the digital side of my system, I was curious to see how my analog front end would fare. Combining the distributor and cords with the ARC REF Phono 2SE, Simaudio 810LP, and Pass Labs XP-25 phonostages that supply my four turntables with amplification, I witness the same effect.

Interestingly, the Furutech components net a more pronounced impact on vacuum-tube gear, wiping away more “veil” than with the digital components at my disposal. Considering the miniscule signal voltages at work, this really is money well spent. Auditioning the latest release from Music Matters, Joe Henderson’s In and Out, cymbals spring to life with more vigor than before. There’s also a definite increase in bass texture.

Such improvements in analog resolution also mean that it’s easier to hear the positives of the Furutech DeMag/DeStat combination—two essential accessories in my analog tool kit.

In the Box

The f-TP615 is built to Formula One car standards. All parts and conductors are treated with Furutech’s Alpha cryogenic and demagnetizing process.  The outlets and receptacles are industrial works of art, which is why many other manufacturers turn to Furutech for plugs and receptacles. Twelve-gauge Alpha -22 wire is used throughout, and the aluminum chassis is covered in a proprietary coating, then combined with ceramic and nano-carbon damping spikes. Each detail ensures the power flowing to your components is as pure as possible. And it all works brilliantly.

While these Furutech designs qualify as premium power products, they will not turn a $500 CD player into a dCS stack. Exhaustive listening comparisons reveal a combination of the f-TP615s and PowerFlux power cords offers the greatest gains in the lowest level of a system’s resolution. Used in concert with top-shelf electronics, they allow components to attain maximum performance. In this context, I enthusiastically recommend the Furutech f-TP615 and array of PowerFlux power cords.

Furutech f-TP615 Power Distributor

MSRP:  $1,650

Alpha PS-950-18 Power Cords

MSRP:  $1,800 ea. (1.8m length)