Instruction Manual

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MASTERSOUND

300 B P. S. E.

Integrated amplifier in class “A”

Parallel single ended

Congratulations on your choice!

The Model 300 B P.S.E. that You chose is a integrated

amplifier in pure class “A” which enhances the technical evolution of

the famous triode 300 B.

The output transformer we designed and manufactured for

this triode allows to reach a range of extension which would be

otherwise impossible with (the use of) standard output transformers

which need (work with) a negative reaction.

The result is a perfect sound stage and a surprising presence.

Summary of content (6 pages)

PAGE 1
MASTERSOUND 300 B P. S. E. Congratulations on your choice! The Model 300 B P.S.E. that You chose is a integrated amplifier in pure class “A” which enhances the technical evolution of the famous triode 300 B. Integrated amplifier in class “A” Parallel single ended The output transformer we designed and manufactured for this triode allows to reach a range of extension which would be otherwise impossible with (the use of) standard output transformers which need (work with) a negative reaction.
PAGE 2
Inside We built the 300 B P. S.E. integrated with the utmost care, using only selected materials. Our product passed the stricter quality tests with excellent results and is now ready to offer You many years of pleasant listening. Tube installation During the transportation the tubes are kept in an appropriate box and then they must be placed in the correct position (see the photo above).
PAGE 3
Check list To be done by the dealer: set up the amplifier with the right impedance 4/8 ohm suitable for the speakers and select the right main line according to country. The above checks are to be made inside the monoblock and shall be carried out only by qualified staff. To be done by the Purchaser: ?? ?? ?? Rear panel 1. The bias control input. ?? 2. Holder containing a plug with incorporated fuse and interruptor. 3. Six speakers connectors: two with black rings and four with red rings (8-4 ohms).
PAGE 4
Switching on of the amplifier On the front panel of the monoblock there are some red lights, which light up when You switch on the amplifier to indicate the correct functioning. When the inner tensions reach the correct level and the red led light brighten, the 300 B P.S.E. is ready to work.
PAGE 5
WARRANTY Specifications ?? Parallel single ended tube amplifier stereo in Class “A” ?? Final tube 300 B ?? Pre-driver tubes ECC 82 ?? Driver tubes 5687 WB ?? Output power 24 Watts for channel This warranty is void when: ?? Input sensitivity 1 Volt ?? the serial numbers have been removed ?? Input impedance 100 K Ohm ?? the screws fixed to the underside, have been removed ?? Output impedance 4 - 8 Ohm ?? other kind of tubes different from the original have been used.
PAGE 6
Master Sound sas Via Cima XII n. 14 - 36051 Olmo di Creazzo (VI) Italia Tel. +39 0444 521733 Fax +39 0444 279525 E-mail: mastersound@aruba.it web site: www.mastersoundsas.