ADL GT40α USB DAC

Furutech Alpha Design Labs ADL GT40a USB DAC with MM/MC phono preamp / preamplifier / headphone amplifier.

The Furutech ADL GT40a harmonises computer files and analogue inputs.

The GT40a is finally here, built for enthusiasts with growing music collections on their computer hard drive.

It's a high-performance 24-bits/192kHz USB DAC at an amazingly affordable price.

Want to convert your LPs or other analogue sources to digital? The GT40a will help you archive your albums.

The well-shielded audiophile GT40a features a low-latency USB 2.0 audio driver that plays and records at 192 kHz. The GT40 is probably the first in its category to feature a built-in low-noise MM / MC phono preamplifier! Transfer your favourite records to hard disk via the USB output.

The ADL GT40a offers a stereo analogue output, switchable between line or MM/MC phono input with a lively and captivating sound that is simply unheard of for this category.

The ADL GT40a (internally wired with Furutech's GT2 USB cable, of course) brings Furutech's signature sound - smooth, detailed clarity - to desktop systems, especially with high resolution 24-bits/192kHz files, but 16-bit/44.1kHz files also sound flawless and very musical.

Product features of the ADL GT40a

High performance 24bits/192kHz "VIA VT1736 " USB chip and 24bits/192kHz "Cirrus Logic CS4270" DAC /ADC chip

Enjoy high-resolution audio at 192KHz/24-bits, exceeding conventional 44.1KHz/16-bit standards

Includes the most proven professional audio drivers for 24bit/192kHz recording and playback.

External power supply: While a device powered via USB can be convenient, it will never develop the power required for high-resolution music file playback, so the GT40a has been equipped with an external power supply.

Headphone amplifier: It contains a powerful headphone amplifier, the ideal drive for good headphones.

Analogue-to-digital converter: The GT40a features a high-performance ADC IC chip for high-resolution recording via its analogue inputs, including phono, AM / FM radio or other analogue signals.

Phono preamp: First in its class, the GT40a offers a phono equaliser for recording your precious LPs.

Switch between moving magnet (MM) and moving coil (MC) or line input.

Highest quality components: The GT40a incorporates high quality amplifiers and capacitors to support its high performance analogue circuitry

High End Audio Grade Connectors: The GT40a features gold-plated Teflon-insulated RCA jacks, an ultra-high-quality aluminium chassis and includes a volume control.

GT40a USB DAC Specifications

USB and Analogue Playback and Record Multimedia Audio System Connector: USB B interface

Analogue Input / Output RCA jack USB playback resolution: 24bits/192kHz (Max)

USB recording resolution: 24bits/192kHz (Max) supports 44. 1 /48 /88.2 /96 /176.4 /192 (kHz)

Frequency response: 20Hz ~ 20kHz (40Hz: +0.5 dB, 15kHz:-0.5dB) SN ratio:-90dB (A-WTD) 

Line output Line output level: 1 Vrms Line input level: MC 0. 4mV / MM 4.0mV / Line 2Vrms

Headphone output level: 1% THD 1kHz (Max.) 94mW(16 ohm),110mW(32 ohm), 98. 6mW (56 ohm), 23mW (300 ohm)

Power supply: Erp step2 compliant, 2Wire AC Input Type, Class II, AC/DC Switching Adaptor output DC 15V / 0.8A / 12W

Dimensions: 150 (W) x 111 (D) x 57 (H) mm

Weight: approx. 650g

The input impedance of the ADL GT40a is fixed at 47K ohms for both MC and MM.

Input sensitivity for MM: 4.0mVrms at 1K Hz

Input sensitivity for MC: 0.4mVrms at 1K Hz

Input sensitivity for LINE: 400mVrms at 1K Hz Max. input sensitivity for LINE: 2.0mVrms at 1K Hz

Input sensitivity for LINE: 2Vrms at 1K Hz

The gain setting of the ADL GT40a is fixed at 62.5dB for MC and 48.5dB for MM.

MC input to LINE output (Vol./Max.) => 70dB @ 1K Hz ,( +/-1dB)

MM input to LINE output (Vol./Max.) => 50dB @ 1K Hz ,( +/-1dB)

LINE input to LINE output (Vol./Max.) => 8dB @ 1K Hz ,( +/-1dB)

It is recommended to use headphones with an impedance of 16 Ohm to 300 Ohm.