Nutube 6P1 Tube for Best Sound
Experience the future of audiophile listening with the Cayin RU9, a state-of-the-art portable USB DAC that combines the best of classic tube technology and modern processing.
The Cayin RU9 is equipped with the Nutube 6P1 tube. The small DAC supports both unbalanced 3.5mm and balanced 4.4mm PO/LO outputs. This flexibility allows you to optimally drive your favorite headphones or speakers. A special highlight is the ability to switch between tube and solid-state operation. This ensures a personalized sound experience that perfectly adapts to your listening habits.
Three Sound Profiles to Choose From: Classic, Modern, and Solid State
Classic: This mode foregoes global negative feedback; instead, local negative feedback is used. This technique leads to higher total harmonic distortion (THD), which creates a warm, nostalgic sound – the classic “tube sound” that music lovers appreciate.
Modern: This profile integrates global negative feedback to define the overall gain. THD is significantly reduced, resulting in a harmonically cleaner and quieter background. Despite this clarity, the warmth of the tubes is retained, creating a sweet, clear, and delicate modern tube audio signature.
Solid-state: Here, the RU9 relies on precisely tuned operational amplifier ICs and associated circuitry. This ensures neutral tonality with fast transients and highly precise audio reproduction. Ideal for anyone who wants to enjoy music in its original, unadulterated character.
Versatile Applications
Whether at home, in the office, or on the go – the Cayin RU9 easily adapts to various usage scenarios. It offers support for a wide range of devices such as smartphones, computers, digital audio players, tablets, and even game consoles. This makes it a perfect choice for anyone looking to elevate their audio experience to the next level.
Dual AKM DAC & 16-Core XMOS Processor
The Cayin RU9 is equipped with two AKM AK4493SEQ DACs operating in mono mode. This configuration ensures outstanding channel separation and minimizes crosstalk between channels – a crucial advantage for an immersive listening experience.
Furthermore, the RU9 uses the powerful 16-core XMOS XU316 processor, which represents the latest generation of USB audio solutions. This processor guarantees impressive digital signal processing and optimizes audio quality at the highest level.
Modern Bluetooth Codec
The RU9 uses advanced Qualcomm QCC5125 technology, enabling high-resolution Bluetooth transmission. It supports modern Bluetooth codecs like LDAC and other HD streaming formats, meaning you can enjoy your music in the best quality – without cable clutter. By supporting UAC1.0 (driverless) and UAC2.0 modes, compatibility with most devices is also ensured.
S/PDIF Input/Output
Another highlight of the Cayin RU9 is the integrated S/PDIF input/output. This allows for easy connection to other digital audio devices and ensures you can unleash the full potential of your audio source. Whether streaming music or playing video games – the RU9 delivers clear, detailed sound.
In terms of technical specifications, the Cayin RU9 impresses with compact dimensions of 100 x 70 x 15 mm and a weight of only 150 g.
Your Perfect Companion for Audiophile Moments
The Cayin RU9 is not just a technical masterpiece but also a statement for every music lover who values high sound quality. With its unique combination of classic tube technology and state-of-the-art digital processing, it elevates your listening experience to a new level. Whether at home or on the go – let yourself be inspired by the sonic diversity of the Cayin RU9 and experience music in its purest form.
