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4.4 Specification of the Pre Amplifier Unit

Vacuum Tube

6DJ8/6922 series or 12AU7 series

(exchangeable)

Signal-to-Noise Ratio (SNR)

92dB

THD + Noise

0.05% @ 10k ohm 0.15% @ 33 ohm

Input Audio

CD IN RCA (Left/Right) x 1 [3Vpp max.]

Output Audio

OUT 3.5mm x 1

Headphone

OUT (3.5mm) x 1

Knob Audio and power switch x 1

Power Indicator

(Blue LED under Tube Socket) x1

Volume Knob x 1

Power Supply DC 12V-13V (max.)

4.5 Specification of the AC Adaptor

AC Input Universal AC 100V-240V/50-60Hz

DC Output DC 12V 5A (60W)

DC Plug DC 2.1mm

Ripple & Noise <= 25mV

Over-load Protection 105%-150%

Over-voltage Protection 115%-150%

Dimensions (L)78mm x (W)50mm x (H)33mm

Содержание Ernestolone

Страница 1: ......

Страница 2: ...FICATIONS 11 4 1 Specification of the Amplifier Unit 4 2 Specification of the Headphone Amplifier Unit 4 3 Specification of the PC USB 4 4 Specification of the Pre Amplifier Unit 4 5 Specification of the AC Adaptor 5 TECHNICAL NOTES for professional user only 13 5 1 DC Bias Voltage Tuning 6 TROUBLESHOOTING 15 7 ACCESSORIES 15 ...

Страница 3: ...rovide high clarity in reproducing high end recording music Digital to analogue convertor to convert your PC music directly through the USB port supporting up to 24bit 96kHz Compact design mini size light weight easy portable and setup Provide up to 2 x 25W output An AC adaptor is bundled for continuous power supply MCU programmed power on off sequence to avoid un pleasant pop noise during power o...

Страница 4: ...washbowl kitchen sink in a wet basement or near a swimming pool etc 3 Object or liquid entry Take care that objects do not fall and liquids are not spilled into the enclosure through any openings Liquid filled objects such as vases should not be placed on the equipment 4 Placing the equipment Only use a rack or shelf that is stable and strong enough to support the weight of this equipment 5 Ventil...

Страница 5: ...Mini must be installed in a manner that makes disconnection possible 10 Power cord protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them Pay particular attention to the point where they exit from the equipment 11 Power lines Locate any outdoor antenna aerial away from power lines 12 Non use periods If the equipmen...

Страница 6: ... may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation WARNING Due to the mains switch being located on the rear panel the apparatus must be located in an open area without anything obstructing access to the mains switch Mains plug appliance coupler is used to disconnect device and it shall remain readil...

Страница 7: ...e rear input 3 3 5mm Headphone socket 4 Input selector 5 Power Indicator WARNING When plug in your headphone or MP3 into the mini jack 2 and 3 always plug in a vertical way NEVER shake the mini jack as this will permanently damage the internal structure of the socket causing bad contact of signal ...

Страница 8: ...ed USB cable 9 Speaker Output Binding Post 10 Amplifier audio signal line in You can connect your external pre amplifier to this input Once connected pre amplifier of ERNESTOLONE will be overrided 11 Power Supply Socket Plug the bundled AC Adaptor to this socket to supply power to this amplifier 12 Vacuum Tube 6922 WARNING When plug in mini jack cable to 7 or 10 always plug in a vertical way NEVER...

Страница 9: ...joy the product without any difficulty Turn the Volume controller 1 clockwise to turn on your ERNESTOLONE Now the vacuum tube 12 will slowly turn on and you will see blue light from the top window After a few seconds the amplifier will turn on automatically and power indicator 5 will turn to blue color Now you can use the Input Selector 4 to select music source line USB If USB input is selected pl...

Страница 10: ...SB input Once your USB cable is connected to ERNESTOLONE you will see below screen from your PC laptop After your device is installed you will find ERNESTOLONE in your playback device as below and your USB is ready for use ...

Страница 11: ...a socket x4 Other Volume Knob Power ON OFF switch x Power Indicator Blue LED x1 Power Supply DC 12V 13 2V max 4 2 Specification of the Headphone Amplifier Unit Signal to Noise Ratio SNR 92dB Power Output 600m Watts per channel on 32 Ohm Headphone Frequency response 15 Hz 100 kHz 1db Input Impedance 10k Ohms Input Audio CD IN RCA Left Right x 1 3Vpp max 4 3 Specification of the PC USB USB version U...

Страница 12: ...Vpp max Output Audio OUT 3 5mm x 1 Headphone OUT 3 5mm x 1 Knob Audio and power switch x 1 Power Indicator Blue LED under Tube Socket x1 Volume Knob x 1 Power Supply DC 12V 13V max 4 5 Specification of the AC Adaptor AC Input Universal AC 100V 240V 50 60Hz DC Output DC 12V 5A 60W DC Plug DC 2 1mm Ripple Noise 25mV Over load Protection 105 150 Over voltage Protection 115 150 Dimensions L 78mm x W 5...

Страница 13: ...ESTOLONE supports two major tube series 1 6DJ8 6922 6N11 6H23n ECC88 E88CC etc and 2 12AU7 5963 5814 ECC82 etc If you change the tube within the same series it needs to re tune the DC bias voltages ONLY If you change the tube from another series it needs both to re tune the DC bias voltages and re setthe jumpers Otherwise the tube may be burnt out The power amplifier jumper setting for Different T...

Страница 14: ...lti meter to detect the DC bias voltage 1 Use screwdriver to take out the two upper level screws in the front panel another two screws in the back panel Then open the upper case 2 Power ON the machine with no audio signal input 3 Wait at least 5 minutes for the machine to run in 4 Use the multi meter to detect the DC voltage between the test point A L red in the PCB the GND black e g the ring of t...

Страница 15: ... properly connect the speaker cables Your PC has not finish recognize ERNESTOLONE Wait until the last screen is seen USB DAC issue No driver installed Make sure PC support plug and play Try another USB port Sound quality problem Playback at low sampling rate In your device player setting select higher sampling rate Hum tube not fully pushed in Insert Tube securely audio connector plug not fully pu...

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