Mystere ca11 User Manual Download Page 6

v2

v1

ca11  

Tube basics

The 6SN7 and 5AR4 tubes will have a life of about 10,000 hours.

Here are some tips on using tubes:

•   Do not use treatments on tube pins or in sockets.

•   If you decide to experiment with other tube types, it’s best not to swap 

tubes in and out repeatedly, as you never want to cycle (pre)amplifiers 

on and off rapidly. They should be left off for at least five minutes. Further, 

every time you insert a tube, you stand a chance of loosening the tube 

sockets. It’s okay to have fun, and we support that, but don’t go crazy and 

swap tubes in and out twenty times in a day.

•   Some tubes and tube socketshave a “center key” which must correspond! 

If you use“brute” force and misalign, you will damage important and ex-

pensive parts of your preamplifier!!

•   The 

Mystère

 ca11 has a warm-up time of just a few minutes. While it is 

not wise to leave tube power amplifiers on 24 hours a day, you may leave 

this preamplifier on though it will result in more frequent tube replace-

ment. Through experimentation come to a conclusion that fits comfor-

tably with your lifestyle.

•   Break-in yields improvements. Every tube, when new, needs to be left 

alone for a little while. So, when your preamplifier is new, or when you 

re-tube it, it may take a little time to settle in. There is however no fixed 

“time rule” for break-in.

•   Please note that tubes can vary electrically, and by plugging in the wrong 

type of tube you can damage the preamplifier, and void your warranty.

Mystère

Tube Tip

Some 6sn7 tubes are more 

microphonic than others. In 

your ca11 the 6sn7 positions 

most sensitive to this are the 

input tubes V1 and V2.

Experiment  if  you  want 

with different 6SN7 tubes in  

the market to get your opti-

mal sound. You also may ex-

periment with the different 

tube-dampers available in 

the market to fine-tune your 

amplifier.

Summary of Contents for ca11

Page 1: ...ca11 User manual Serialnumber Myst re FUSE UPDATE D I N F O R M ATI O N INSIDE...

Page 2: ...t so much more than simply splitting the integrateds into pre and power stages a technique common in the industry today Like all our separates its chassis provides space a tremendous advantage More sp...

Page 3: ...hope that the Myst re ca11 preamplifier will make you want to follow our next steps in expanding this new range of products If you have any questions or comments don t hesitate to contact us You can...

Page 4: ...if desired Check to see the power switch is off down Connect each source to the corresponding plugs Connect output of preamp with input of poweramp Your Myst re preamp inverts phase Connect positive t...

Page 5: ...airs of stereo inputs 1 set of preamp outputs terminal ca11 Front panel Rear panel Myst re Fuse Protection A note on fuses Fuses are safety valves They should always be replaced with the exact same va...

Page 6: ...a few minutes While it is not wise to leave tube power amplifiers on 24 hours a day you may leave this preamplifier on though it will result in more frequent tube replace ment Through experimentation...

Page 7: ...s do light up normally Check input selector setting input and output wiring if all seems to be OK check power amplifier Hum or noise coming from one channel Noisy tube First swap the 6SN7 tubes left t...

Page 8: ...panied by written description of the defect and a return authorization number available from Durob Audio BV or the authorized representative via e mail Upon receipt of the defective product Durob Audi...

Page 9: ...t all of the stones at Stonehenge were shaped with the inner surfaces of many stones being dressed to be either flat or concave and their outer surfaces irregular or convex The contrasting acoustic ex...

Page 10: ...Sales Support Myst re Durob Audio BV P O Box 109 5250 AC Vlijmen The Netherlands 31 73 511 2555 www mystere eu com info mystere eu com Email us for your local distributor...

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