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4. Specifications 
 

4.1 Specification of the Power Amplifier Unit     

 

Output Power 

2x25W  @4ohm

 

2x12W @8ohm(RMS)

Signal-to-Noise Ratio (SNR)

 

98dB

Dynamic Range 

98dB

THD+Noise Audiophile Quality 

0.03% @ 9W 4Ohm

 

0.15% @ 8W 4Ohm

 

0.11% @ 6W 8Ohm

High Power 

10% @ 15W 4Ohm

 

10% @ 10W 4Ohm

Input Audio 

IN RCA (Left/Right) x 1

Power Socket 

2.1mm x 1

Speaker OUT 

Banana 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 

USB2.0 Full speed compliant supported USB Audio

 

 Class 

1.0 

Resolutions 

16/24 bit supported 

Sampling rate

 

8/16/32/44.1/48/96 kHz supported

 

 

 

Summary of Contents for Ernestolone

Page 1: ......

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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