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performing this function in the unlikely event that it becomes necessary, please 
contact your dealer or a service professional.

Input Connection

The INT-25 accepts three (3) single ended (RCA / Cinch) input connector.  The input 
impedance is 48 Kohm making the INT-25 compatible with either tube or solid state 
source components.

Output Connections and Loudspeakers

The rear of the INT-25 is equipped with a pair of  Furutech binding posts for each 
channel, four total.  The binding posts are marked red and black.

The Red output connector connects to the Red (+) of your speakers and the Black 
connector will connect to the Black (-). The Black output connector is at circuit 
ground.  You can use it to connect to powered sub-woofers if you like.

The amplifi er is stable into any load which does not dip below 0.5 ohms, but it will 
protect itself by shutting off any channel which outputs more than 10 amps (200 watts 
peak into 2 ohms).  The protection circuit is reset by turning the amp off for a few 
moments and then turning it back on.  We recommend that you check your output 
wiring and/or the loudspeaker if this happens, and contact your dealer or the factory 
if you have problems.

The Furutech binding posts deserve special note - in keeping with the requirements of 
Class 2 circuits in North America they are fully insulated.  Speaker cables connected 
as intended will have no exposed conductive metal.  The Furutech posts accept 
banana, spade, bare wire or pins with a diameter of 4.5mm or less.  Bare wire, pins 
and spades socket into the binding post only from the bottom.  The nuts on the 
binding posts should only be fi nger tight.  Never tighten with wrench or pliers.

Operation:

Once the speakers have been connected in observation of the proper regulations 
and with the observation of polarity and phase you may attach the input cables and 
power cord.  It is always advised that the power cord is the last connection made 
and the fi rst to be removed. Once you turn on the AC from the rear switch, the amp 
will come on breifl y and go into Standby. 

You are now ready to play music. 

 

Press the power switch on the front panel of the 

INT-25, the display will light up.  Select the input you want from the front panel or 
remote. Turn the volume up to your preferred listening level.  Sit back and enjoy!  The 
INT-25 takes approximately an hour to fully warm up and sounds better as it does.  
Pushing the power button on the front panel of the INT-25 a second time turns it off.

Summary of Contents for INT-25

Page 1: ...1 pass INT 25 Owner s Manual ...

Page 2: ...stroy equip ment Ventilation Power amplifiers run warm but you should be able to place your hands on them without discomfort You must allow for this heat in installation by providing for free air circula tion around the product Leave a minimum of 6 of space around the amplifier The ventila tion should not be impeded by covering the ventilation openings with items such as newspa pers table cloths cur...

Page 3: ...ult is faster lower distortion lower noise higher damping and larger Class A operating envelope into low impedance loudspeakers all in a simple 3 stage circuit with total of three pair of push pull gain transistors In their ideal state matched push pull FETs give perfect square law cancellation of distortion an effect somewhat spoiled by degenerative Source resistance used to constrain the persona...

Page 4: ... periods The amplifier is designed to perform well with the included power cord Should you select an after market detachable power cord please confine your selection to those rated by local authorities to carry a minimum of 13A at 250V At idle the INT 25 will consume 275W from the AC mains The required voltage and correct fuse value will be indicated on the rear of the amplifier Both 100 Vac and 120 ...

Page 5: ...our dealer or the factory if you have problems The Furutech binding posts deserve special note in keeping with the requirements of Class 2 circuits in North America they are fully insulated Speaker cables connected as intended will have no exposed conductive metal The Furutech posts accept banana spade bare wire or pins with a diameter of 4 5mm or less Bare wire pins and spades socket into the bin...

Page 6: ...e button or reach the limits of the volume control Balance is not used with the INT 25 This is used on other Pass preamps and has no effect on this product Tape is not used with the INT 25 This is used on other Pass preamps and has no effect on this product Pass Thru is not used with the INT 25 This is used on other Pass preamps and has no effect on this product Display The default setting for the...

Page 7: ...7 ...

Page 8: ...utting them in wrong could cause damage Replacing the fuse The fuse should only be replace with the same type and size as indicated on the rear Audio Specialty FUSE NOTE The Overload and Time Delay characteristics will differ slightly due to the different metallurgy of the fuse elements between commercial grade and audio grade fuses We can t guarantee that your audiophile grade fuse won t blow at ...

Page 9: ...factory or shipping product to the factory for repair Non North American product must be returned to the country of origin for warranty service Foreign distributors are only required to offer warranty service on Pass Laboratories product that they have imported verifiable by serial number Please note Conditions of warranty service and customer rights for product purchased outside the United States ...

Page 10: ...10 pass Pass Laboratories Inc 13395 New Airport Rd Suite G Auburn CA 95602 530 878 5350 passlabs com ...

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