Note: Ray tubes upgrades are only available in the US. If you live outside of the US and order any Ray tube upgrade, we will refund the tubes portion of your order minus a 5% service fee.

“The thing that puts [the Ray RESERVE 6SN7 tubes] in first place is resolution, bass control, and an overall tighter, cleaner sound compared to any of the NOS variety while still imparting a nice sense of tone and texture.” ~ Twittering Machines

Ray RESERVE 6SN7 Tubes

The Ray Tubes 6SN7 RESERVE Vacuum Tube delivers a profound, lifelike audio experience with smooth vocals, balanced treble, and commanding low-end, tailored specifically for audiophile systems. Each tube undergoes meticulous selection and quality checks, featuring gold pins for enhanced conductivity and durability, making it the supreme upgrade for high-fidelity applications.

Ray Tubes is revitalizing the vacuum tube market with hand-selected, rigorously-tested tubes, backed by a 1-year warranty that underscores the quality and reliability of their products.

• Hand-selected and rigorously tested

• Fewer than 5% of the tubes commissioned for production meet our voltage, current, and sound signature standards

• Gold pins for superior conductivity and longevity

• Monocrystalline carbon coating enhances sound by cooling, blocking noise, and allowing for quicker electron transmission

• Low noise and microphonics

• 12-month warranty against manufacturing defects (more info)

• 30-day trial / return policy (more info)

Ray Tubes Quality Control Processes

Due to the clarity of the ZOTL circuit in LTA products, we are very picky about tubes. LTA has worked directly with Ray to establish strict guidelines and industry-leading QC processes to ensure great sound, consisent operation, and long tube life.

• 24 Hour Burn-In: Each tube undergoes a burn-in period to stabilize components and identify early signs that might lead to premature failures later on.

• Comprehensive Parameter Testing: Tubes are tested against more than a dozen critical parameters like amplification factor and internal resistance.

• Individual Measurement Recording: Measurements are logged under each set’s unique serial number for traceability.

• Current Draw Analysis: Industrial-grade machinery measures current draw to ensure fully-accurate matching.

• Functional Testing: Tubes are installed in amplifiers to assess real-world performance.

• Microphonics Testing: Tubes are subjected to physical stressors to reveal any buzzing or defects.

• Expert Listening Sessions: Audio specialists randomly select certain tubes that have passed all previous tests and evaluate the sound quality of tubes.