Product Description

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Stereotimes USA Tube Audio

The Show Newport 2016

The Energizer Bunny is a banana slug compared to Charles Harrison of USA Tube Audio. On Thursday, the industry preview day, when over 90% of the other rooms were locked and exhibitors toiled frantically to get operational; Charles had four complex systems ready to play in one room. He probably would have had five but he ran out of walls. Systems were Ayon Audio with Lumenwhite, Acoustic Arts with KEF Reference 5 speakers, Revel with Mark Levinson, and KEF Blade 2 with Mastersound.

Enjoy the music

Mastersound PF-100 Mono Amps

The USA Tube Audio room at T.H.E. Show Newport 2016 filled the large Ballroom Salon E with multiple high-end audio systems. There were so many delights to behold and great sound too!

Another system featured something i have always loved, and that being tube amplification from Italy’s Mastersound. The Mastersound PF-100 monoblock tube amps ($25,900) uses the 845 for output tube to produce 117 Watts. This very special parallel single-ended Class A monoblock also uses 6SN7 EH for driver duties and has high-end parts throughout. In fact the internal circuit board has 24k gold traces! Far exceeding the specs for Hi-Res Audio means you have a frequency response from 12Hz to a stratospheric 100kHz. Of course all this comes with some heft, as she weighs over 114 lbs.

Specifications

Parallel Single Ended in class “A”

Power: 2 x 117 Watt
Tubes: 3 x 6SN7 – 4 x 845
Input: 1 x RCA
Output transformer: MastersounD
Load impedance: 4 – 8 Ohm
Semi-automatic Bias
Negative feedback: 0 dB
Dimensions: 54 x 47 x 27 cm.
Weight: 50 Kg