Fullmusic 211SL Premium VACUUM TUBE Replace 211 Electronic Valve for Vintage Audio Amplifier DIY (one pairs)

NOTES: Price = 1 pair (2 pieces)

Tianwang 211SL and 211SL ;; direct generation of Xidian Aristocratic Voice Dawn Lights and other brands 211

Warm reminder: Innovative and upgraded SL series To ensure the increase of service life and stability, the environmental protection filament is not bright!

Introduction:
1. The SL series is an upgraded version of the Q series and the CNE Tianwang series. The response of the Q series and the CNE Tianwang series has been detached. As the upgraded version of the SL series, it will naturally strive for excellence and satisfy your higher pursuit of listening.
2. 211SL, using unique materials developed and designed by itself, special metal screen coating, and extremely lightweight design, makes this product more transparent and elegant in mid-high frequency, deeper dive in low frequency, excellent tri-band performance, balanced There are almost no shortcomings.
3. In general, the SL series focuses on Mr. Liu ’s unique understanding of tube design, material use, and manufacturing process for decades. He does not abandon the tradition of tube technology, design concepts, and material use, but does not blindly keep the old. It is self-styled, and it is not an exaggeration to say that this 211 can be the same as Ximei's 211. Many users' feedback has surpassed Xidian 211. Welcome to compare and comment.

Features of SL series products:
1. Currently available varieties are 845SL, 805SL, 211SL
2. The anode base material is selected from 0.2-0.3mm (the inherent resonance frequency is slightly higher) special metal material to ensure the characteristics of beautiful and full sound in the middle and high frequency bands, taking into account the sound demand of the high, medium and low frequency bands.
3. The alternating sound source signal of the grid will not induce excess electrical signals inside the anode, which reduces the noise physically.
4. The special coating on the anode surface can continue to increase the vacuum degree in the tube during use, reducing the chance of collision between electrons and residual gas, and achieving the purpose of reducing noise again.
5. The increase of vacuum in the tube can also prolong the service life of the tube.
6. A special coating on the anode surface can increase the anode's heat radiation ability and enhance the anode's resistance to overcurrent. Variation curve of vacuum degree in electron tube during life.