Alpha Design Labs 24bit/192KHz GT40α USB DAC with Phono Stage!

Description

The Alpha Design Labs (ADL) GT40α USB DAC with Phono Stage is an innovative, high-performance digital-to-analog converter (DAC) designed for audiophiles and professionals seeking a versatile solution for both digital and analog audio sources. It combines a 24-bit/192kHz USB DAC, phono stage, and headphone amplifier in one compact and powerful unit, making it ideal for those who want to enjoy high-resolution digital audio and vinyl playback with top-quality sound.

• 24-bit/192kHz High-Resolution USB DAC: The GT40α features a high-quality 24-bit/192kHz DAC, capable of handling high-resolution digital audio files from a computer or other digital sources. This provides excellent audio clarity, detail, and fidelity for users who demand the best from their digital music collection.
• Phono Stage (MM/MC): In addition to its USB DAC functionality, the GT40α includes a built-in phono stage that supports both Moving Magnet (MM) and Moving Coil (MC) phono cartridges. This allows you to connect your turntable directly to the GT40α for optimal vinyl playback, with support for a wide range of cartridges for superior sound.
• USB Interface: The USB interface allows for simple and seamless integration with a PC or Mac. This plug-and-play capability turns the GT40α into a high-quality external sound card, improving the sound quality of digital files while also allowing for easy recording of vinyl records into digital formats.
• Analog-to-Digital Converter (ADC): The GT40α also functions as an ADC with the ability to convert analog audio signals (e.g., from your vinyl records) into high-resolution digital audio files (up to 24-bit/96kHz). This feature is perfect for archiving vinyl collections or other analog sources to a digital format without losing audio quality.
• Headphone Amplifier: With a high-quality headphone amplifier built-in, the GT40α provides enough power to drive a wide variety of headphones, making it perfect for personal listening. The amp ensures a dynamic and immersive sound experience, even with higher-impedance headphones.
• Line-Level Outputs: The GT40α offers line-level outputs, allowing you to connect it to external amplifiers or powered speakers for use in a larger home audio system. This ensures maximum versatility when it comes to how you want to set up your audio chain.
• RCA Inputs/Outputs: Equipped with high-quality RCA inputs and outputs, the GT40α can be used with a wide variety of audio devices, from turntables and amplifiers to other analog sources.
• Low-Noise Power Supply: The GT40α is powered by a low-noise external power supply, which helps to reduce electrical noise and interference, ensuring clean and stable power delivery for optimal audio performance.

Performance Benefits:

• Superior Digital Audio Performance: With its 24-bit/192kHz DAC, the GT40α provides pristine sound quality, offering greater resolution, detail, and accuracy compared to standard soundcards or DACs. High-resolution audio files are reproduced with stunning clarity, offering a more immersive listening experience.
• Vinyl Playback and Recording: The built-in phono stage allows users to enjoy their vinyl records with the clarity and warmth of analog sound while providing the ability to digitally archive vinyl in high-resolution formats, preserving the original sound quality.
• Headphone Listening: The powerful headphone amplifier ensures that even high-impedance headphones are driven with ease, providing a detailed, dynamic, and immersive listening experience.
• Versatile and Compact: The GT40α is a multi-purpose unit that serves as a high-resolution DAC, phono stage, and headphone amplifier in a single, compact package, making it ideal for users with limited space or who prefer an all-in-one solution.

Ideal Applications:

• Vinyl Enthusiasts: The GT40α is perfect for audiophiles who want to enjoy their vinyl records with high-quality sound, while also having the ability to digitally archive their analog collection in high-resolution.
• Digital Audio Fans: For users who stream or store high-resolution digital audio files, the GT40α offers an easy way to improve the quality of audio playback from a PC or other digital sources.
• Home Recording: The ADC functionality makes the GT40α an excellent choice for recording analog sources, such as vinyl or other audio equipment, in high-resolution digital formats.
• Headphone Users: The GT40α is perfect for headphone enthusiasts who want a versatile DAC with enough power to drive a variety of headphone types, ensuring immersive, detailed sound.

The Alpha Design Labs GT40α USB DAC with Phono Stage is a powerful and versatile solution for audiophiles who want high-resolution digital audio playback, superior vinyl reproduction, and the ability to archive analog audio in digital formats. With its 24-bit/192kHz DAC, built-in phono stage, and headphone amplifier, the GT40α delivers outstanding sound quality and versatility in a compact and easy-to-use package. Whether you’re listening to digital music, enjoying vinyl records, or recording analog audio, the GT40α is an excellent choice for improving the overall performance of your audio system.

The GT40a Gets You to the Winner’s Circle!

The GT40α built for enthusiasts with growing music collections on their computer hard drives. It’s a high performance 24bits/192kHz USB DAC that’s amazingly affordable. Looking to convert your LPs or other analog sources to digital? The GT40α will take you to the podium with every album you archive.

The seriously-shielded audiophile-grade GT40α features a low-latency USB 2.0 audio driver that plays and records at 24bits/192kHz. A likely first for this category, the GT40α includes a built-in low-noise MM / MC phono preamp! Record your favorite vinyl to hard disk via the USB output.

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.

• High performance 24bits/192kHz “VIA VT1736 “USB chip and 24bits/192kHz “Cirrus Logic CS4270” DAC /ADC chip
• Enjoy audio in high resolution at 24bits/192kHz surpassing conventional 16bit/44.1KHz standards
• Incorporates the most trusted driver in professional audio for 24bits/192kHz recording and playback
• External power supply: while a USB-powered device might be convenient, it won’t develop the power required for high resolution playback, so we designed the GT40α with an external power supply to solve the problem.
• Headphone Amplifier: It contains a high performance “Maxim MAX9722A” headphone amplifier with ample drive for good headphones
• Analog-to-Digital Converter: The GT40α sports a high-performance ADC IC chip for high resolution recordings via analog inputs including phono, AM/FM radio, or other analog signals.
• Convenient Clip signal Toggle switch for Recording Attenuation: Adjust the recording attenuation to avoid any distortion during recording: 0dB, 6 dB, or 12dB (RecAtt/db signal light comes on when input level exceeds circuit Gain).
• Phono Preamplifier: A first for this class, the GT40α features a phono equalizer for recording your precious LPs. Switch between Moving Magnet (MM) and Moving Coil (MC) or Line input
• Highest Quality Parts: The GT40α features a high quality amplifier and condenser supporting its high performance analog circuit (NJM5532 OPAMP： for ADC,DAC,Line in and out and
• NJM2068 OPAMP： for Phono )
• High End Audio Grade Connections: The GT40α is equipped with gold-plated Teflon-insulated RCA jacks with an extremely high quality aluminum chassis and machined volume knob

Specifications

• USB & Analog Playback and Record multimedia audio system
• Connectivity: USB B Interface, Analog 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 (+/-0.5 dB)
• SN ratio: >90dB (A-wtd) / Line Output
• Line Output Level: 5 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 AC Adaptor Rating: 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: 650g Approx.
• GT40a Windows driver supports Win XP, Win 7 and Win 8 (not Win Vista)
  IMPORTANT:
  The load (Input Impedance) for the ADL GT40α is fixed at 47K ohm for MM and 100 ohm for MC
• Input Sensitivity Level for MM: 4.0mVrms at 1K Hz
• Input Sensitivity Level for MC: 0.4mVrms at 1K Hz
• Input Sensitivity Level for LINE: 400mVrms at 1K Hz
• Maximum Input Level for LINE: 2Vrms at 1K Hz
• 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)

GT40α has no setting for gain to match different impedance headphones.
We recommend using 16 ohm to 300 ohm impedance headphones.