FELIKS-AUDIO EUFORIA evo Headphone Tube Power Amplifier Installation Guide
- June 3, 2024
- FELIKS-AUDIO
Table of Contents
FELIKS-AUDIO EUFORIA evo Headphone Tube Power Amplifier Installation Guide
FRONT AND REAR PANEL DESCRIPTION
-
6.3mm headphones output
-
XLR headphones output
-
Volume Control
-
Power Indicator
-
Line input
-
Line output (pre-amp mode)
-
Power switch, fuse socket and AC power connection
-
Cross Feed on/off switch
TUBES INSTALLATION
CAUTION! HOT PARTS. DO NOT TOUCH! BURNED FINGERS WHEN HANDLING THE
PARTS. WAIT 15 MIN AFTER SWITCHING OFF BEFORE HANDLING PARTS.
WARNING – TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER NO USER SERVICABLE PARTS INSIDE, REFER SERVICING TO QUALIFIED PERSONEL. HOT SURFACES, KEEP COMBUSTIBLE MATERIALS AWAY FROM TUBES, DO NOT BLOCK AIRFLOW
GENERAL SAFETY INSTRUCTIONS
READ BEFORE FIRST USE!
The amplifier should be plugged to power socket with ground connection. Please note that tubes can reach operational temperature with exceeding 150 Celsius(303 Fahrenheit) therefore tube exchange should be done with the device unplugged from AC power, after allowing the tubes to cool down and letting the capacitors discharge (minimum 15 minutes). Recommended ambient temperature for the amplifier to operate is between 15 and 30 Celsius(59-86 Fahrenheit). In case of tube glass cover break, stop the device operation immediately and switch off the power supply from the mains. Remove the damaged tube after cooldown of the device (min. 15 minutes).
DEVICE VENTILATION
Proper ventilation provides long lifetime of the amplifier. Upper and lower cover are equipped with ventilation holes which guarantee a free airflow. Bottom ventialation holes provide cool air into the device case, which flows through it and escapes at the top cover. Do not obstruct the airflow around the amplifier. Allow at least 30cm(12 inches) free space above the tubes and 10cm (4 inches) for the rear and sides. Do not place the device on any other heat source. All ventilation openings should remain uncovered during operation of the amplifier.
MANUFACTURER WARRANTY
The amplifier was manufactured and tested to the highest quality standards. The limited warranty covers defects in material or workmanship for 36 months (tubes for 12 months), from date of purchase. Our limited warranty is void if the product is returned with tampered labels, any alternations or in case of improper use. To request warranty service, please provide sales receipt/document of purchase and description of the problem. Product shipping is at buyer’s expense.
INSTALLATION AND break-IN PERIOD
Before turning the amplifier on for the first time, please install the tubes in the sockets, as described on the illustration. Take care while installing the tubes, ensure the pins fit appropriate holes in the socket. New amplifier requires a break-in period which takes place during normal use of the device. Please note that the optimal sound quality will be reached after approximately 30 – 50 hours of operation. In day to day use, tubes reach their operational temperature after 15 minutes from starting the device. All tubes must be installed before turning on the amp. Never place the unit in an unstable location. A device may fall, causing serious personal injury or death. Only use furniture that can safely support the device. Ensure that the amplifier is not overheating the edge of the supporting furniture. Do not place the device on tall furniture without anchoring the furniture. Do not place the amplifier on cloth or other materials that may be located between the unit and supporting furniture. Keep away the device from the reach of children.
ABOUT FELIKS-AUDIO
Feliks Audio is a boutique manufacturer of hand-crafted tube amplifiers, with over 20 years of audio solutions development experience. All our products are in-house engineered, tuned and assembled at our site in Lubliniec (Poland). We create special and unique designs, blending together technology and tradition.
Originally, Feliks Audio focused mainly on custom made amplifiers tailored to client’s order. Over the time we have developed many innovative and sophisticated audio solutions. Thanks to that we have gained valuable knowledge and experience across broad range of applications. Our amplifiers, among them Expressive, Elise and Euporie, have won many supporters across the world.
Our products offer a perfect blend of passion for honest sound, great attention to technical details and beautiful finish. We do follow design simplicity, minimizing the number of elements in projected signal path. Thanks to this approach we ensure that the sound produced by our devices is pure and true.
WHAT MAKES EUFORIA SO SPECIAL
Euforia is Feliks Audio flagship headphone amplifier launched in 2017. This beautifully handcrafted OTL, built around two 6SN7 and two 6AS7G tubes, delivers amazing dynamism, sound stage and level of details never heard of before in tube amplifiers, at the same time giving the unmistakably tube sound signature. Euforia’s unique design allows for exceptional sound quality with a broad range of headphones, powerful enough to drive even demanding low impedance headphones (<32 ohm) including planar magnetics.
- Unrivalled neutrality and sound stage
- Unrivalled neutrality and sound stage
- Incredibly detailed and dynamic music scene
- Cross-Feed circuit – a revolutionary solution in tube amplifiers
- Virtually no back round noise
- Beautifully hand-crafted
- Broad frequency: 8Hz – 75 kHz +/- 3dB
- Premium driver tubes
- Improved noise reduction circuit
- High-end class power transformer
- Preamp safety circuit
- Gold plated RCA inputs
- Extended 3-year warranty
Cross-Feed is a revolutionary solution in the class of tube amplifiers that provides better control over the listening experience. This is a system that enables more natural channel separation and wider sound stage by moving a part of the lower frequency range to the opposite channel.
listening to a regular headphones amplifier places you “in the middle of the orchestra” – with certain instruments being heard strictly in the left ear while others only in the right one. Depending on the type of music, this can cause discomfort and “listening fatigue”
That`s why we decided to implement user-switchable Cross-Feed function among selected products. Our Cross-Feed function gives you a possibility to try a more natural, less clinical–“front facing orchestra” experience – like in real life!
TECHNICAL SPECIFICATIONAND ELECTRICAL SYSTEM DESCRIPTION
Euforia is built with two 6AS7G (also accepts 6080 power tubes and two driver
6SN7 tubes.
Power supply is based on a custom made stabilized toroidal transformer with
electronic ripple suppression. The amplifier is equipped with automatic bias
circuit, therefore no retuning is required after changing tubes. Please note
that the optimal sound quality will be reached after approximately 30 – 50
hours of run-in.
- Impedance: 100 k ohm
- Impedance: 100 k ohm
- Frequency response: 8 Hz – 75 Khz +/- 3 dB (300 ohm)
- Power output: 250mW
- Amplification level: 20dB
- THD: 0.4 % (300 ohm, 20 mW)
- Optimal headphones impedance: 32 – 600 ohm including planar magnetics
- Headphones output: Jack 6.3mm
- AC: 230V / 120V (region dependent, power cord included)
- Dimensions without tubes: 295x203x165 mm [11,6x8x6,5 inch]
- Weight: 7 kg [15,4 lbs]
TUBES USED
Euforia is originally equipped with high quality tubes. Stock driver tubes are
6SN7 power tubes are 6N13S. Tubes can be changed by the user, to the
following:
Driver tubes: 6N8S, CV181, ECC32, 5692, 6F8G
Power tubes: 6080, 5998, 6N5P, 6N5S, ECC230, 7236, CV2523
GENERAL SAFETY INSTRUCTIONS
- This device is not intended for continuous use for more than 8 hours. After that time the product should be turned off to cool down for the minimum time of 1 hour.
- Protect the power cord from being walked, pinched or overheated (eg. by the tubes).
- The use of tubes other than those specified in the “LAMPS” section is prohibited and may result in danger and damage to the device.
- Unplug this device during lightning storms or when unused for long periods of time.
Warning
- Prevention of hearing loss
- Permanent hearing loss may occur if headphones or earphones are used at high volume for prolonged period of time
- Note: To prevent possible hearing damage, do not listen at high volume levels for long periods
- Before putting on headphones, lower set the volume to a WARNING comfortable listening level
Feliks Audio declares that this device complies with the essential requirements and other relevant provisions of the Low Voltage Directive LVD – 2014/35 / EU
WARRANTY CARD
This is your warranty card. Make sure your seller has completed all of the fields below. In the case of a warranty service, include a copy of your purchase with this card. Please also include a description of the fault with the card.
- Warranty start date
- Product name
- Serial number
- Signature of the warrantor
SUPPORT
We wish you many happy hours enjoying your new tube amplifier. Should you have
any inquiries please contact us directly at
[email protected] or contact your local
dealer.
Manufacturer: Feliks Audio Sp. z o.o., 42-700 Lubliniec, 2a Tuwima street