
The Audio-GD NOS-1909 is a high-performance, non-oversampling digital-to-analog converter (DAC) designed for audiophiles seeking an authentic and engaging listening experience. This device is part of the NOS-19 series from Audio-GD, a renowned brand recognized for its commitment to delivering exceptional sound quality.
The NOS-1909 utilizes a single-chip solution, the Burr-Brown PCM1792A, which is a well-regarded choice for its ability to handle high-resolution audio files with precision and accuracy. This DAC employs a non-oversampling (NOS) design, which means it does not employ digital filtering during the conversion process. Instead, it relies on the original recording's sampling rate and converts it directly to an analog signal.
The NOS-1909 offers multiple input options, including coaxial and optical S/PDIF, as well as USB for connectivity with a computer. It is also R2R (resistor-to-resistor) ladder-type designed, which is known for its ability to maintain the integrity of the original signal throughout the conversion process.
This DAC features a high-quality, low-jitter clock for improved timing precision, ensuring that each sample is converted at the correct moment. Additionally, it is built with a high-quality power supply and a well-designed layout to minimize noise and ensure a stable power supply.
The NOS-1909 has a maximum sampling rate of 24-bit/192kHz and is capable of handling a wide range of digital file formats, including DSD. Its output is a fixed 2Vrms, making it compatible with a wide range of preamplifiers and power amplifiers.
The Audio-GD NOS-1909 is housed in a compact yet solidly built aluminum case, which not only looks great but also helps to minimize vibrations and ensure a stable operating environment. Its front panel features an LED display that indicates the sampling rate and input source.
In summary, the Audio-GD NOS-1909 is a high-performance, non-oversampling digital-to-analog converter that is designed for audiophiles seeking an authentic and engaging listening experience. It utilizes a well-regarded single-chip solution, offers multiple input options, and employs a high-quality power supply and clock to ensure accurate and precise conversion. With its compact yet solid design, the NOS-1909 is an excellent addition to any high-end audio system.
The Audio-GD NOS-1909 and NOS-19 are non-oversampling digital converters (DACs) manufactured by Audio-GD, a Chinese audio equipment company. These DACs have gained popularity among audiophiles for their purist, no-compromise approach to digital-to-analog conversion. In this analysis, I will outline the key pros and cons of the Audio-GD NOS-1909 and NOS-19, and draw a conclusion based on their merits.
Pros of Audio-GD NOS-1909 and NOS-19:1. Transparent Sound: The NOS-1909 and NOS-19 are known for their transparent and neutral sound. They do not color the music in any way, allowing the listener to experience the original recording as closely as possible.
2. Authentic Dynamic Range: Both DACs offer an authentic dynamic range. They can handle subtle nuances in the music, as well as powerful and complex passages, resulting in a more engaging listening experience.
3. Low Distortion: The NOS-1909 and NOS-19 have very low distortion levels. This is important because distortion can mask the details and subtleties in the music, making it sound less clear and less engaging.
4. Flexible Connectivity: The DACs offer a variety of connectivity options, including USB, S/PDIF, and AES/EBU inputs, as well as RCA and XLR outputs. This makes them compatible with a wide range of digital sources.
Cons of Audio-GD NOS-1909 and NOS-19:1. Lack of Additional Features: The NOS-1909 and NOS-19 do not come with any additional features, such as a headphone amplifier or a volume control. This might be a drawback for some users who prefer a more integrated solution.
2. Limited Power Consumption: These DACs have limited power consumption, which might not be sufficient for some high-end systems. However, this is not a major concern for most users, as they can be easily powered by a good-quality wall wart or a dedicated power conditioner.
3. Price: The NOS-1909 and NOS-19 are not inexpensive. They are priced at the higher end of the market, making them a significant investment for many audiophiles.
Conclusion:The Audio-GD NOS-1909 and NOS-19 are exceptional digital converters that offer a transparent, neutral, and dynamic sound. They are highly regarded by audiophiles who value authenticity and fidelity in their music reproduction. Despite their limitations, such as the lack of additional features and the higher price point, these DACs remain a popular choice for those who seek a pure and uncompromising digital-to-analog conversion experience.
Recommendation:If you are an audiophile who values transparency, neutrality, and authenticity in your music reproduction, and you are willing to invest in a high-end digital converter, then the Audio-GD NOS-1909 or NOS-19 could be an excellent choice for you. However, if you require additional features, such as a headphone amplifier or a volume control, or if you have a more modest budget, you might want to consider other options in the market. Ultimately, the decision depends on your personal preferences and requirements as an audio enthusiast.
Details:
Multi-ply galvanic ally isolated and shielded boards to isolate the power input - transformer, supplies, digital analog. Fully discrete design with discrete analog stages without any IPA chips and polyester coupling caps in the signal path. Two nos modes in the software are select-able; with one focusing on speed data process and other uses a proprietary large algorithm to all. A total of five class parallel mode power supplies for all digital and analog circuits.
Up for sale is a light use excellent condition Audio-Gd NOS-19-1 digital Audio converter. The decision to design all new software offers up much better performance than previous Audio Gd dac's. Most people in the know love nos sound especially from pcm1704 considered by many to be most natural un-digital sounding chip out there. 4 digital inputs: USB / optical coaxial /HDMI, support up to 384k 32 bit through USB, 24-192 coax or optical, pdif interface chip at dir9001.
To get that sound, Mr.Kings of Audio Gd spent a great deal time designing new rectifiers and proprietary logic software for the DPs chip in house not based on off shelf software!, the design utilizes full -6db /octave passive analog filter to reduce induced noise coming from nos chain currently no other dac uses.
specifications stereocompo:
- brand: Audio Gd
- mpn: Nos1909
- compatible brand: For American Audio
- type: Digital Audio Converter
- color: Black
- compatible model: Nos-19 / Dac-19
offer stereocompo:
- options: ship-to-home
- best offers: true
- prices: $5.95–$599.98
- item condition:
- New
- Used
- Open box
- Ungraded
- availability: in stock
- started: may 8, 2025
- in stock #: 5
- sold #: 19
general stereocompo:
- category: Electronics > Audio > Home Stereo Components
returns stereocompo:
- policy: no returns
shipping stereocompo:
- transit: 5-12 days
- service: usps ground advantage
- class: standard
- carrier: usps
- type: calculated
payments stereocompo:
- credit card: mastercard
- other
- wallet: google-pay
seller stereocompo:
- rating: 100.0%
- # reviews: 79
- city: arvada, colorado
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