RT-CO-12AU7-X1
- RT-CO-12AU7-X1
- RAY TUBES
Ray Tubes 12AU7 CORE Series Dual Triode Vacuum Tube (ECC82, 6189, CV4003).
Beyond the Ordinary
The CORE 12AU7 delivers everything you know and love about tube audio. With modern production and uncompromising selection processes ensuring reliability and consistency, the Ray Tubes CORE Collection is all you need for years of audio bliss.
Hand selected and tested, the Ray Tubes CORE 12AU7 vacuum tube is manufactured with modern production and selection processes for reliability and consistency. The CORE Collection leaves the uncertainty of the New Old Stock market behind and makes uneven performance and tube failures a thing of the past.
Introduced in 1946, the 12AU7 was the world’s first noval (nine-pin) vacuum tube. The 12AU7 is a double triode, consisting of two 6C4 tubes in a single envelope. Before the advent of solid-state electronics, it was valued for its versatility and portability. Nowadays, it’s a common sight in the pre-amp phase of tube amplifiers, where it functions as a phase inverter or driver.
Sound Characteristics
The CORE 12AU7 provides a natural and clear sound, ideal for users who prioritize midrange performance, especially suited for systems that require warmth and smoothness in their audio reproduction.
- Bass Performance
Mild and balanced, with moderate quantity and good control. Well-suited for light music or medium-small dynamic audio, delivering clear rhythmic definition without overemphasizing the low end. - Midrange Performance
Clear and transparent, with a natural tone. Vocals exhibit good clarity and warmth, especially in female vocals, where it shines with a vibrant and elastic sound. - Treble Performance
Clear and non-fatiguing, with good detail but moderate extension. The overall high frequencies are smooth, making it easy to listen to for extended periods. - Dynamics and Soundstage
The dynamics are well-balanced, capturing small to medium dynamic details effectively. The soundstage is moderate, with clear imaging and well-defined instrument positioning, making it ideal for compact audio systems or near-field listening.
Technical Specifications
- Tube Type: 12AU7 / ECC82 / 6189 / CV4003
- Tube Socket: 9-pin
- Max Anode Dissipation Power: 2.75 W
- Max Screen Dissipation Power: N/A
- Output Power in Class A1 Amp (Single Tube): N/A
- Output Power in Class AB1 Amp: N/A
- Max Anode Voltage: 300 V
- Max Screen Voltage: N/A
- Max Grid Voltage: ~50 V
- Heater Voltage: 6.3 V
- Heater Current: 0.3 A
- Transconductance: 2.2 mA/V
- Amplification Factor: 17
- Internal Resistance: 7.7 kΩ
Package Contents
- Single vacuum tube
- User handbook featuring burn-in guidelines
- Certificate of authenticity and warranty
The Ray Tubes One Year Warranty
Most vacuum tubes are notoriously fickle. That’s why warranties are rare. But we trust our products and we’re proud to offer our One Year Warranty against manufacturing defects. For more details, check out our warranty page.