Zesto Audio EROS 500 Select Owner'S Manual Download Page 1

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Zesto Audio EROS 500 Select

2022

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P a g e

EROS 500 Select

Class A Monaural Power Amplifier

Owner’s Manual

Please read carefully before installing and operating this equipment

Zesto Audio

3138 Calle Estepa, Thousand Oaks, California 91360

805-807-1840

www.zestoaudio.com

Made in the USA Using US and Imported Parts

Summary of Contents for EROS 500 Select

Page 1: ...Monaural Power Amplifier Owner s Manual Please read carefully before installing and operating this equipment Zesto Audio 3138 Calle Estepa Thousand Oaks California 91360 805 807 1840 www zestoaudio co...

Page 2: ...io engineer That makes me fuss about sound That s a good thing Each unit is built by hand with precision and pride to produce the most enjoyable listening experience for you I am proud to put my name...

Page 3: ...Cables 10 Power 11 Tubes 12 13 Bias Select Switch 14 15 Safety Tips Fuses 16 Operating Grounding Turn on 16 17 Trouble shooting 17 18 Cleaning 18 Warranty Information 19 What s in the box Eros 500 Se...

Page 4: ...mount the unit on a wall or ceiling 5 WATER AND MOISTURE Do not use the unit near water for example near a swimming pool bathtub wash bowl kitchen sink or laundry tub or in a damp environment like a...

Page 5: ...electric light or power circuits When installing an outside antenna system take extreme care to avoid touching the power lines or circuits contact with them could be fatal 14 OVERLOADING Do not overl...

Page 6: ...ission of the copyright holder 19 FCC INFORMATION FOR USER CAUTION Any changes or modifications not expressly approved by Zesto Audio could void the user s authority to operate the equipment These lim...

Page 7: ...slow blow fuse Optional factory installed 220V 230V 240V 50 60Hz mains 6 3 Amp slow blow The fuse is located in the drawer compartment in the IEC mains connector Inputs RCA Single Ended High quality r...

Page 8: ...go to the 8 Ohm output and pin 1 goes to ground Power rating for Auto Bias Select Switch Settings Left Position KT88 150 Watts per channel KT120 150 Watts per channel KT150 150 Watts per channel KT17...

Page 9: ...onnector Optional factory installed 220V 230V 240V 50 60Hz with 6 3 Amp slow blow fuse Power consumption at rated output 756 Watts On Off switch conveniently located on front panel Amber LED low volta...

Page 10: ...the inputs of the power amp Tip If you have a choice balanced cables are preferred for sonic reasons Speaker cables The output of this amplifier is non differential The common black binding post is gr...

Page 11: ...oner or outlet strip use a separate strip for the power amp and a separate strip for your other components It s ok to use the same duplex but not the same outlet strip Keep in mind that each EROS 500...

Page 12: ...e damage to both the power amp and the tubes You could cause what s known as Red Plating Important The wrong type of the tubes can cause considerable damage Any damage caused by tube rolling is not co...

Page 13: ...ns in the tube with pin 6 missing so it s easy to get it wrong Intuitively you think the open pin matches the key but it doesn t The key orientates at 6 o clock but the missing pin 6 orientates at 10...

Page 14: ...ly and are the responsibility of the owner How to use the Bias Select switch This switch gives you the option to customize your system Each setting not only changes the power but also changes the soun...

Page 15: ...ipment is turned off or unplugged from the main power before attempting to install this unit Important Warning Tube electronics should not be turned ON then OFF then ON again quickly This could blow a...

Page 16: ...he IEC mains will VOID the manufacturer s warranty Speaker fuses The fuses directly under the binding post are designed to blow to protect the amplifier in case there is a short in the speaker or spea...

Page 17: ...fuse Turn the unit off Insert one tube in V1 then turn unit on If it s good doesn t blow the fuse then turn unit off Once both LEDs are off insert a tube in V2 Keep V1 V2 inserted Repeat for next 4 t...

Page 18: ...go out check the mains fuse If only one light goes out you will need to call the factory Cleaning Dust your tubes and unit with a feather duster Don t use any liquid cleaners like glass cleaners on y...

Page 19: ...nit Important Any use of aftermarket performance fuses on the IEC mains will VOID the warranty Any damage caused by tube rolling is not covered under the warranty Any damage caused by inserting tubes...