ADL GT40a Phono/Headphone Amp w/ DAC
The ADL GT40α features L/R analog outputs, and switchable line or phono inputs with a vivid, captivating sound that is simply unheard of in this category.
The ADL GT40α (wired with ADL’s Formula 2 cable of course!) brings Furutech’s signature sound -- smooth, detailed clarity -- to desktop systems, especially with high resolution 24bits/192kHz files, but even 16-bit/44.1kHz files sound impeccable and very musical.
Hifi Choice Recommended ComponentAs an ADC, performance is broadly similar, though it’s harder to compare things to the status quo, as we are really looking at a field of one. Line level inputs are captured well (again with good detail) and we felt that imaging is, if anything, a little better than on the replay side. Deep bass is excellent, a touch better in our opinion than that of the semi-pro (Firewire) ADC we used for comparison and the treble is nicely open and clear.
A/V Guide ReviewThe GT40 brings High End sound to your system in the following way: Recall any visit to a fellow audio enthusiast’s home. As music plays you can immediately hear if the sound “sets up” in an audiophile way: A sense of spaciousness, imaging, out-of-the-speaker sound, open highs and an inviting midrange over tight bass. The ADL GT40 brings Furutech’s signature sound of smooth, wideband, detailed clarity to desktop systems, especially with high resolution 24-bit/96kHz files, but music at 16/44.1 also sounds much improved. Your first impression will be that you’ve never experienced compute files sound so open!
Ratings & Reviews
The ADL-GT40a is a phenomenal piece of equipment. It is a must have if you are interested a versatile tool to enhance vinyl listening or music production. The Inputs and Outputs allows it to interface with any piece of home or professional audio equipment. I have mine driving my Yamaha MSP5’s for truly flat high fidelity listening. It couples to my Sound Devices mixer for doing pro music production. The RIAA curve is excellent for vinyl listening/conversion to 24Bit 192Khz on my MacBook Pro. My TT is a Yamaha YP-B2 with Ortofon 2mRED. It even makes my MDS-E10 (MD Deck) and CDR-W33 (CD Mastering Deck) sound better converting the 24Bit 44.1Khz when routed by Toslink through my Mac. I can easily switch from driving my monitors to headphones by plugging in my Grado’s.
DAC: Digital to audio, ADC: analogue to digital, phono & headphone pre-amp
I have owned a GT40A for 3 years and use it almost daily. No breakdowns or performance problems. If you play and record analogue (ie; turntable) you can use by pushing a button and back to a DAC by pushing a button again. It is incredibly versatile: interfacing analogue to digital in both directions (DAC & ADC), phono pre-amp for all cartridges (low input MC to MM cartridges), 0, 6, 12 gain increase adjustments, headphone amp, easy turn knob attenuation adjustment that also controls headphone volume, 24 bit/192 Khz capable ...it does everything. It has only one analogue and one digital input which may be a problem for some. Windows software will sometimes get confused if you change your USB port to another or remove midstream - you just need to be aware. Minor issues. Great product and respectable performance.