Selling a pair of Lamm L 1.1.s in great shape.
Class A/B with 2x6C33's, 12AX7 (Telefunken) and 12BH7.

The Lamm ML 1.1.s is renowned not only for its hybrid design and high-end performance but also for its expert use of vacuum tube technology in the output stage. In these amplifiers, a key component is the power vacuum tube—specifically, the 6C33C triode—which plays a central role in delivering the amplifier’s signature sonic performance. Here’s an in-depth look at what makes these tubes so important for this type of amplifier:

1. High Current and Low Impedance Characteristics
Power Handling:
The 6C33C is a high-current, low-impedance output triode. This means it can deliver a robust amount of current to your speakers while maintaining the integrity of the signal. Its low internal impedance minimizes losses, ensuring that the power produced reaches your speakers effectively.
Dynamic Performance:
Because of these characteristics, the tube enables the amplifier to handle dynamic musical passages with precision. The ability to rapidly supply current is essential for reproducing transients accurately in music, leading to a detailed and engaging listening experience.
2. Sound Quality and Musicality
Warmth and Naturalness:
Vacuum tubes like the 6C33C are famed for imparting a warm, musical quality to the sound. In the Lamm ML 1.1.s, this results in an output that combines the best aspects of tube warmth with the reliability of modern hybrid engineering. The natural compression and subtle harmonic distortion provided by the tube contribute to a rich, detailed midrange and a more “musical” tonality.
Sonic Signature:
Audiophiles appreciate that these tubes can deliver a sound that is less clinical and more emotionally engaging. The design of the ML 1.1.s, which incorporates the 6C33C tubes, helps create an expansive three-dimensional soundstage, keeping the instruments’ spatial cues and textures intact.
3. Design Integration
Hybrid Design Approach:
The Lamm ML 1.1.s uniquely combines tube-based characteristics with solid-state components. The tubes are used where they can deliver the most musical benefit—typically in the output stage—while solid-state components handle tasks that require high precision and reliability (such as the driver or buffer stages). This blend allows for both the emotive performance of tube amplification and the efficiency and control of modern electronics.
Component Quality:
Lamm Industries is known for its meticulous selection of parts. The use of high-grade tubes like the 6C33C is complemented by military-grade resistors and film capacitors, ensuring that the amplifier not only sounds exceptional but also exhibits outstanding build quality and longevity.
4. Historical and Technical Context
Legacy and Innovation:
Vacuum tubes have been the cornerstone of audio amplification for many decades. While modern designs often favor solid-state technologies, the resurgence in tube hybrid amplifiers like the Lamm ML 1.1.s reflects a commitment to preserving the musical attributes of tube sound while integrating technological advances to overcome traditional limitations (like lower efficiency and heat management issues).
Industry Recognition:
Reviews and discussions among audiophiles have repeatedly highlighted the role of the 6C33C tubes in defining the amplifier’s performance. Their ability to drive speakers across a range of loads and deliver nuanced, detailed sound is frequently mentioned as a benchmark in high-end audio reproduction.
LAMMINDUSTRIES.COM

AUDIOGON.COM
Conclusion
In summary, the vacuum tube used in amplifiers like the Lamm ML 1.1.s—primarily the 6C33C triode—is pivotal for achieving its outstanding performance. Its high current and low internal impedance characteristics allow for powerful

Final tubes are new and in the posted price I include an extra matched set of new 6C33 final vacuum tubes.

I ship in Europe with tracking number.

Price doesn't include shipping.
I accept Paypal and Wire to IBAN.