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READ ALL INSTRUCTIONS

All the safety and operating instructions of your Thrax Audio 

equipment should be read before power is applied to the equipment. 

RETAIN OWNER'S MANUAL

These safety and operating instructions should be retained 

for future reference. 

HEED  WARNING

All  warnings  on  the  unit  and  in  the  operating  instructions  should  be 

adhered to. 

FOLLOW INSTRUCTIONS

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All operating and use instructions should be followed. 

CLEANING

Unplug the unit from the wall outlet and leave for at least 30 min. - make sure 

the  unit  is  not  hot  before  you  start  cleaning.  Use  dry  or  damp  soft  cloth  to  clean  the 

surfaces. Do not use corrosive, abrasive or spray for cleaning. 

VENTILATION

Do not block any ventilation openings. Do not install near any heat sources 

such as radiators, heat registers, stoves, or other apparatus (including amplifiers). The unit 

should not be installed in a built-in location such as a bookcase or rack unless proper 

ventilation is provided.

GROUNDING

Do  not  defeat  the  safety  purpose  of  the  grounding-type  plug.  A 

grounding-type  plug  has  two  blades  and  a  third  grounding  prong.  The  third  prong  is 

provided  for  your  safety.  If  the  provided  plug  does  not  fit  into  your  outlet,  consult  an 

electrician for replacement of the obsolete outlet.

POWER CORD PROTECTION

Protect the power cord from being walked on or pinched 

particularly at plugs, convenience receptacles and the point where they exit from the 

apparatus.

LIGHTNING

Unplug  this  apparatus  during  lightning  storms  or  when  unused  for  long 

periods of time.

SERVICING

Refer all servicing to qualified service personnel. Servicing is required when 

the apparatus has been damaged in any way, such as if the power-supply cord or plug is 

damaged,  liquid  has  been  spilled  inside  the  appliance  or  it  has  been  exposed  to 

moisture, the appliance does not operate normally, or has been dropped.

DO  NOT  OPEN  THE  CABINET

There  are  no  user  serviceable  components  inside  this 

product. Opening the cabinet may present a shock hazard, and any modification to the 

product will void your warranty.

WARNING

To reduce the risk of fire or electric shock, do not expose this apparatus to rain 

or moisture.

IMPORTANT SAFETY INSTRUCTIONS

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Summary of Contents for Orpheus

Page 1: ...ITHIN THE CHASSIS NEVER OPERATE THE PREAMPLIFIER WITH THE CHASSIS COVERS REMOVED DO NOT OPERATE THE UNIT IF WET OR NEAR WATER THE PREAMPLIFIER IS FAIRLY HEAVY BE SURE TO USE PROPER LIFTING TECHNIQUES TO AVOID BACK STRAIN AND INJURY BE CERTAIN TO INSTALL IT IN A SECURE LOCATION FROM WHICH IT CAN NOT FALL OR TIP OVER TIME SPENT FAMILIARIZING YOURSELF WITH THIS MANUAL WILL BE WELL REWARDED ...

Page 2: ...mportant Safety Instructions 3 2 Introduction 4 3 Specifications 5 4 Unpacking and Installation Unpacking 6 Installation 6 5 Front Panel 7 6 Back Panel Inputs 8 Outputs 8 AC Fuse 8 7 Operation 9 CONTENTS 2 ...

Page 3: ...y purpose of the grounding type plug A grounding type plug has two blades and a third grounding prong The third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet POWER CORD PROTECTION Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point wher...

Page 4: ...be compliment 2 x D3a amplification 2 x 6C4П 6S4P amplification 1 х 6Ц4П 6C4P rectifier Inputs 2 x RCA or XLR MM or MC phone cartridges Output RCA or XLR Power consumption 50W Dimensions 432W x 400D x 120H mm Weight 15 kg ...

Page 5: ...ntegral circuit reference To interface to both MC and MM type cartridges our design uses a built in Lundahl cobalt amorphous step up transformer for the MC types It is switchable for low and high impedance providing for appropriate load and gain to the wide variety of cartridges and is bypassed in MM mode Our input gain stage is based on a super low noise D3a German tube used as a triode It provid...

Page 6: ... rack This might create a parallel ground path that could degrade the sound of your system Connect the input and output cables Input connection is via single ended RCA jacks or XLR jacks which can be from balanced or unbalanced sources Output can be on RCA or XLR jacks and can be set for balanced or unbalanced loads with or without ground connection at the preamplifier IMPORTANT READ THE SECTIONS ...

Page 7: ...tton is pressed while source 1 is selected the source wraps around to source 3 The current source is indicated via a row of LED s between the source buttons Source Up Button Each button press changes the selected source to the next higher source If this button is pressed while source 3 is selected the source wraps around to source 1 Source LED s A row of 3 LED s between the source buttons They ind...

Page 8: ...ct your Orpheus phono preamplifier to a line preamplifier using the set of RCA output jacks or the pair of XLR output jacks The OUTPUT MODE switch must be set accordingly Do not connect an unbalanced load with pin 3 hot to the XLR connectors You may also choose RCA UNGND if it is necessary to break a ground loop AC Fuse Please note that there is one fuse located in the IEC power connector For 220 ...

Page 9: ... period we recommend turning it off using the power switch on the back panel to save power As with all high fidelity products the sound characteristic changes somewhat as it warms up Best sound will be achieved after about 15 minutes of operation Any time that the Orpheus phono preamplifier has not been used for a few weeks the sound may be different This is also normal for high resolution audio e...

Page 10: ...NOTES ...

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