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AM Hi-End 833s Ultima

AM Hi-End

833S Ultima Single-ended silver version tube amplifier


Global unique maximum power at present stage

Lasting for 4 years manufacturing and continuous improvement

Whole amps is making with 30 pounds high-purity silver

Output transformer and push transformer all winding with high-purity silver wires

All internal connection wires are making with rectangular silver wires

Each wires is plated with gold

100% handmade

Above information taken from AM Hi-End Website.

Please contact us to discuss further and pricing



  • Tube complement: ECC88, KT150 as the drivers, 833 as the amplifiers .

  • Frequency response: 20Hz-100KHz

  • Input Impedance : 100k ohms

  • Input sensitivity: 1.0Vrms

  • S / N: > 98dB 

  • Input selections: RCA single-ended ; balanced / XLR

  • Power Output: 130w

  • Load impedance: 4 & 8 ohms

  • Power consumption: 400W(each) 

  • Weight: 150Kg per pair

For more information or to purchase this item please contact us here or call us on the number below.


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