April Music Stello DP200 Owner'S Manual Download Page 5

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Analog Output (Pre Out)

 

1 x Balanced Output (XLR) 

1 x Unbalanced Output (RCA) 

 

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Analog Input

 

1 x Balanced Input (XLR) 

2 x Unbalanced Inputs (AUX 1 is used as Phono input when P1 Phono Module is installed) 

 

Class A Push-Pull Output Stage 

CS3310 Volume Control Chip 

Two entirely separate toroidal transformers for the Digital and Analog sections 

 

 

 

Upsampling (24Bit/192kHz) Digital to Analog Converter

 

(Rate Selectable) 

 

DAC section of the Stello DP200 supports an upsampling up to 24Bit/192kHz. And the sampling rate is 

selectable by the user. All Sampling Rate Selection and Digital Input Selection can be made using either the front 

panel buttons or the remote control. 4 Digital Inputs are supplied. They are one AES/EBU (Balanced), 2 Coaxial 

(RCA), and an Optical (Toslink) Input. 

Specially designed digital filtering circuitry is adopted at the end of Delta-Sigma DAC section. This 6th order 

digital filter, which is not usual for a normal DAC, provides excellent signal to noise ratio and much cleaner 

background to allow the beautiful timbre of the music to shine through. 

For a jitter-free signal, special PLL circuit is applied in the DAC section. 

 

 

 

Headphone Amplifier

 

 

The DP200 is equipped with a headphone jack on the front panel. The headphone amplifier in the DP200 is not 

just a combination of some OP amps like the ordinary mid-priced headphone amplifiers in the market. 

Custom designed headphone interface circuitry is adopted at the end of the analog stage which is activated to 

support the full functionality of DP200 as a pure headphone amplifier. 

 
 

     Stello DP200 DAC/PRE 

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Summary of Contents for Stello DP200

Page 1: ...Owner s Manual Stello DP200 Selectable Upsampling DAC Preamp Headphone Amplifier Optional Phono Equalizer Upsampled Analog Digital Converter April Music Inc...

Page 2: ...log convergence product that includes high end 2 channel preamplifier 24Bit 192kHz selectable upsampling D A converter and a quality headphone amplifier in one chassis You can also get optional phono...

Page 3: ...e in the different countries you should contact the dealer from whom you purchased the DP200 or the dealer nearest of you Or check with www aprilmusic com for the voltage selection service when you tr...

Page 4: ...end sound Digital volume control separate dual mono design all discrete class A circuit keep DP200 running as a pure high end preamplifier A mode selection switch on the rear panel should remain in va...

Page 5: ...pplied They are one AES EBU Balanced 2 Coaxial RCA and an Optical Toslink Input Specially designed digital filtering circuitry is adopted at the end of Delta Sigma DAC section This 6th order digital f...

Page 6: ...an record any analog sources such as LPs tapes and radio broadcasts with a studio quality sound The quality of analog to digital conversion in ADC 1 module is that of studio quality and all components...

Page 7: ...e are 2 Analog Outputs 3 Analog Inputs 4 Digital Inputs 3 Digital Outputs and a Bypass input Also included is a 12V trigger output for automatic on off switching of the other components Fig 2 The Rear...

Page 8: ...e surround processor The display window on the front panel shows BYPASS MODE Another press of BYPASS button returns to normal DP200 status Main Output Both Balanced and Unbalanced outputs are provided...

Page 9: ...he connection to Personal Computers Digital VCRs Set top boxes MP3 players etc Use Toslink optical cable for the connection Digital Output The DP200 sends digital input signal to its 3 digital outputs...

Page 10: ...FRONT PANEL CONTROL Buttons and Display Fig 3 The Front Panel Fig 4 The Display Window Stello DP200 DAC PRE 9...

Page 11: ...Default input setting is Coax1 and the volume level for Coax1 is displayed on the upper right of the display window Output level varies from 00 0 to Max 60 0 in 0 5 steps to give a total of 120 steps...

Page 12: ...me level varies from 00 0 up to Max which is 60 0 with an interval of 0 5 for a total of 120 steps All the volume levels are stored and recovered when the unit is on again during the Standby mode Main...

Page 13: ...AA Batteries are used for the remote control y Turn 4 screws counter clockwise to unscrew the upper and lower covers using the supplied screwdriver y Carefully grab both button plate and green PCB boa...

Page 14: ...usted by internal DIP switches y Load Impedance IMP L IMP R are for load impedance setting of 6 choices Place the switch according to your cartridge loading Starting 1 through 6 reflects loading of 47...

Page 15: ...OFF 1 ON 2 OFF MC HIGH MID 1 OFF 2 OFF 1 OFF 2 ON MC MID MC HIGH 1 OFF 2 OFF 1 ON 2 ON MC LOW SWITCH GAIN MM L MC L RECOMMENDED CARTRIDGE 1 OFF 1 ON MM HIGH LOW 2 OFF 2 OFF 1 OFF 1 OFF MID 2 ON 2 OFF...

Page 16: ...gital output ports by the RECORD button Upsampled output also can be selected by the RECORD button Default setting without ADC 1 module of Jumper J30 is pin 1 2 connected WO ADC When ADC 1 board is in...

Page 17: ...XLR 1 Unbalanced RCA Max Output 3 5 Vrms Digital Volume Control FIXED VARIABLE Output Mode selectable Full Balanced Class A Operation Headphone Amplifier Interface Socket Bypass for Surround Processo...

Page 18: ...purchase must be supplied for all warranty services Any unauthorized work modification or service rendered on the player will void the warranty Warranty Period 2 years Date of Purchase Authorized Ste...

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