Table of content
Contents
1. Output 110dB gt 92 at 1Khz gt 76 at 10Khz 115dB Neutrik Headphone jack 6 35mm with gold plated contacts RCA connectors with gold plated contacts 10W with outboard low noise power supply HQ 1 PSU technical specification type transformer voltage requlatory circuit AC acceptance Dimension liner power 45W toroidal type 18V 2 5A Total 8pcs Hi Fi grade Nippon Chemicon Electrolytic capacitior in total capacity 25100uF 5 x 2 200 uF at AC input stage 3 x 4 700UF at DC output stage 110V 10 220V 10 by area requriement 183 x 145 x 55 mm Two outfit design Black panel Red panel 14 Feature of HEADQUARTERS 1 KingRex new HEADQUARTERS HQ 1 is in Class A MOSFET design is general purpose desktop headphone amplifier HQ 1 has one input and two outputs which is selectable by front panel push button one is line output and another is phone output Gold plated NEUTRIK 6 35mm headphone jack and gold plated RCA terminals for provide great contact The interior circuitry consists by first stage transistor Toshiba A970 C2240 for first stage amplification and output stage by Hitachi MOSFET 2SK214 Featuring Hi Fi grade Panasonic FM capacitor as main filter brings the transparent background and balanced soundstage input capacitor choose WIMA increase acoustic density output capacitor choose Vishay for more neutral and delicate details All material choose for neutr2. 5W toroidal transformer 18V 2 5A completed with 25 100uF total capacity of reserve power and optimized regulatory circuit based on LMS 1585 constant voltage regulator As the Headquarters to co ordinate and mobilize the HQ 1 has an input output impedance characteristic that s highly adaptable and will match nearly all headphones or earphones available in the market Be it audiophile grade closed or open air type in ear monitors or portable audio ear buds the HQ 1 proves to be the perfect performance partner yielding output power from 100mW at 300 ohm to 570mW at 30 ohm Thanks to the sophisticated Class A MOSFET circuitry THD N drop to a bottom low 0 005 while frequency response opens up wide at 20Hz to 80 kHz As the Headquarters to set high standard of performance only top notch audiophile grade components are qualified to work here Toshiba A970 C2240 for first stage amplification Hitachi MOSFET 2SK214 for output stage Panasonic FM capacitors be choosen as main filter for transparent background and balanced soundstage WIMA input capacitors for enhanced acoustic density Vishay output capacitors for more neutral and delicate details Gold plated Neutrik 6 35mm headphone jack gold plated RCA terminals Neutrik XLR socket DC power transmission Furukawa PCOCC internal wiring and ALPS potentiometer choose for sonic purity What s the result The naturally expansive warm sound and vivid dynamics appears As the Headquarters t
3. EADQUARTERS headphone amplifier make sure that you first turn off the power to all devices to be connected Refer to the user s guide for each device and use the specific cable for the connection Set the volume levels of all devices including that of the HEADQUARTERS headphone amplifier to minimum before connecting the HEADQUARTERS headphone amplifier to your actual set up and to the AC outlet Otherwise an extremely loud noise could damage your loudspeakers or even your hearing If you plan not to use the HEADQUARTERS headphone amplifier for a long period of time such as when you are on vacation remove the power plug from the AC outlet Otherwise a fire could possibly result If any abnormality occurs while suing the HEADQUARTERS headphone amplifier remove the plug from the AC outlet In this case first shut off the power amplifier or turn down the volume controls and so on to avoid possibly damaging transients If you notice any abnormality such as smoke smell noise etc remove the plug from the AC outlet Confirm that the abnormality is no longer present then consult your dealer for repair If you continue using the HEADQUARTERS headphone amplifier under abnormal condition fire or electrical shock might result If a foreign object or water enters inside the equipment remove the plug from the AC outlet and consult your dealer for repair If you continue using the HEADQUARTERS headphone amplifier under this condition fire or ele
4. Table of content Introduction Welcome join KingRex usership Performance amp value Engineering passion amp design idea Contents in this box Safety instruction Important safety instructions Safety caution Important warning Operation environment presentation Front panel details Rear panel details Connecting the cables and machine setting Input setting Output setting How to operate Specification of HEADQURATERS HQ 1 Feature of HEADQUARTERS HQ 1 Maintenance Burin in Trouble shooting Service amp Warranty Introduction Welcome joins KingRex usership After the first integrated amplifier T20 visit the Hi Fi field globally KingRex never stop designing and creating good sounding products Gladly there are lots of audiophiles keep trying KingRex products sharing their feedbacks and providing their opinions to help KingRex knowing the good products are worth to be expected and it is able to survive in harsh tests KingRex is not very big company and it makes us have more elasticity to create more fitting personal demand Hi Fi gears as desktop integrated ampl T20U or our new product HEADQUARTERS headphone amplifier It s a coincident for KingRex to create the home use headphone amplifier From the early beginning the headphone amplifier creation is all about the family member and closing friends request for good sounding headphone amp After t
5. al balance details rich musicality and vivid tuning Original ALPS potentiometer for provide the best signal for sonic purity Input output signal path setting use FURUKAWA PCOCC which brings more expansive and warm sound Discreet external linear power design highly current supplied toroidal transformer LMS1585 constant voltage regulator total 8pcs Hi Fi grade Nippon Chemi Con Electrolytic capacitor in total capacity 25100uF 5 x 2 200 uF at AC input stage 3 x 4 700uF at DC output stage through NEUTRIK XLR socket all design stream out fully power to fit active dynamic demands Two style chassis design Chassis design by piano glass paint steel 180 x 138 x 45mm with aluminum red anodized panel in hair polishing or Sandy blast paint steel 180 x 138 x 45mm with aluminum black anodized panel in hair polishing 15 Maintenance For cleaning the cabinet use a dry cloth and wipe dust away If needed moisturize the cloth with a small amount of window cleaning dissolvent Do not use excessive amounts of solvents and do not let any of solvent spill into amplifier The front panel is made of aluminum it can be cleaned by using normal mild solvents and clean paper tissue or cloth Do not use any other the scratch the mirror display at the front Burn in All new electronic equipment must be burned in to achieve optimum performance Please allow the new pre amplifier and reserved power supply unit to burn in by playing music with the lou
6. ctrical shock may result If the power cord is damaged for example if it is cut or if the core wire is exposed ask your dealer for a replacement If you continue suing the HEADQUARTERS headphone amplifier under this condition fire or electrical shock might result The HEADQUARTERS headphone amplifier offers superb sonic quality To ensure the best possible results you should use the best quality connecting cables that you can afford Regular maintenance involves keeping all connections clean using a quality contact cleaner Important warning You must earth this machine The PREference PSU is going through 3 wires power cord and wall ac socket If you cut off the mould plug get rid of it straight away You cannot rewire the plug it into a socket The wires in the mains lead have the following color code Green and Yellow Earth Blue Neutral Brown Live If the wires in the main lead do not match the colors marked in your plug do the following You must connect the green and yellow wire to the pin marked by the letter E or by the safety Earth symbol or colored green and yellow or green You must connect the blue wire to the pin which is marked with the letter N or colored black You must connect the brown wire to the pin which is marked with the letter L or colored red You must have a fuse in the plug adaptor or at the distribution board B The power supply cord should be rounted so that it is not likel
7. dspeakers connected for 200 hours before critical listening is performed Service The simplicity of the KingRex PREference preamplifier and reserved PSU are very few parts can be breaking down Should you ever require service you can either contact your dealer or national distributor who can solve any problems locally You are also very welcome to contact KingRex Technology Co LTD directly if you need any information or help Our contact information is listed on the last page of this user guide Our best wishes We at KingRex only use the best raw materials trimmed and rafted to perfection by the best engineers and sound enthusiasts for all audiophiles The guidance lines in this manual will assure you of an exquisite sound experience hope it will provide clear instruction to operate our products We hope you years of proud ownership and happy listening We feel confident that you will cherish this amplifier for both its amazingly clear reproduction as well as for its splendid craftsmanship elegant appearance and convenient size Hope you won t mind to share with us if there is any problem or questions Please do not hesitate to contact with us We look forward to hearing from you 16 Kingrex techo this product to be free from defects under normal uses for a period of one 1 year from the date of purchase based on a proof of purchase receipt or invoice This warranty includes exchange for new product within the fir
8. el l 6 35MM PHONE JACK PHONE OUT LED INSTRUCTION LIGHT OUTPUT SELECTING SWITCHING BUTTON PRE OUT LED INSTRUCTION LIGHT VOLUMN KNOB qos 11 Connecting the cables and machine setting Input setting amp output setting KingRex Technology Co LTD HEADPHONE AMPLIFIER jut TS INPUT l ivyoooo oooo oo 0 ooo Cc Og O00 00 0 f Headquarter unus n KingRex Technology Co LTD MADE IN TAIWAN L R L MODEL PSU HO 1 MADE IN TAIWAN lee 14vec AC POWER IN FUSE 22 280 ass 3 GND LL LL LL Tr U SOURCE Power AME CD PLAYER TUNER DAC o o How to operate 1 Please do not pill up the HQ 1 amp HQ 1 PSU as it might be interrupted by very little noise Please place the HQ 1 amp HQ 1 PSU in horizontal position for getting the best performance 2 Please make sure all power connection being tight before you start use it Please noted the Neutrik XLR plug connection is for signal pass please do not connect the HQ 1 PSU with any other machines to avoid the unknown damages 3 Please minimize the volume by VR before you replace another headphone 4 Inthe early two minutes of turning up the power of HQ 1 the internal capacitors and input
9. he early stage product research and sample creation we can t stop thinking to create one for our family and friends So we trying to get it done and make it great After the long time testing tuning and practicing our entire offer is trying to create one good headphone amplifier to fit the demand of neutral and fidelity sound Before you start operating the HEADQUARTER HQ 1 we hope you can spend some time to read this user manual carefully This user manual has fully instruction for how to install operate and preserve the machines It will help to extend the life circle of your HQ 1 and provide the best performance of your HQ 1 Hope you will fully enjoy the music Sincerely yours All KingRex staffs Performance amp value Move up the audio ladder Connect to the headquarters Nothing can be more challenging than moving up the audio ladder in today s economic climate At KingRex we re committed to putting money to where our ears are And so are you After spending countless months and sweat on developing and perfecting personal audio we are proud to announce our inaugural headphone amp the Headquarters HQ 1 This exciting new establishment will fulfill our goal in the following ways As the Headquarters that commands authority the HQ 1 has adopted a two chassis design with separate power supply for sonic integrity And it s not the switch mode power supply but audiophile grade linear power with rock solid 4
10. ing while using HQ 1 Contents this box Headquarters headphone amplifier 1 Headquarter liner power supply unit 1 AC power cord 1 Headquarter XLR female jack DC power cord 1 User manual 1 Warranty card 1 Fully package iteam 1 one paper carton box 1set black recycle foam Safety instructions A Important safety instructions Thank you for choose KINGREX HEADQUARTERS headphone amplifier We sincerely hope you could keep the user manual for whole HEADQUARTERS headphone amplifier lifetime it provides you with better protection for connected equipment Please read this user manual very carefully It provides safety installation and operating instructions that will help you derive the overall performance and fully extend the life that the HEADQUARTERS has to offer Please save this manual It includes important instructions for the safely use HEADQUARTERS and for obtaining factory service should the proper operation of the HEADQUARTERS come into question Please save or recycle the packaging materials The HEADQUARTERS s shipping materials were designing with great care to provide protection from transportation related damage These materials are invaluable if you ever have to return the HEADQUARTERS for service Damage sustained during transit is not covered under the warranty B Safety caution To reduce the risk of electric shock disconnect the HEADQUARTERS reserved power supply unit from the mains supply bef
11. o channel lines of communication the HQ 1 in addition to headphone output is equipped with RCA line output and can be used as a high quality preamp selectable through a push button on the front panel As the Headquarters to bestow flagship image the HQ 1 is furnished with two chassis designs piano glass paint steel complemented with red anodized hair brushed aluminum front panel for trendsetting style and sand last paint steel with black anodized hair brushed aluminum front panel for the timeless classic look You ve earned it Welcome to the Headquarters Engineering passion amp design idea The slightest demand the greatest satisfaction In headphone amplifier circuit design some user might think more is better In KingRex design more is not definitely better The HEADQUARTER 1 is the first Class A headphone amplifier with pre out design The MOSFET as the heart of the HQ 1 makes the sound to be even warm and juicy We think the vivid dynamic and transparent ton is also another main character of the HQ 1 Some part of these character might also need to thank for the separated HQ PSU After T20 series audio amplifier appear to the public KingRex already set the image for good power source provider and great audio equipment designer The first unique design is the isolated linear power supply unit it definitely improve the sonic performance by instant current surge providing ability and neater DC for providing clean backgro
12. ore installing the HEADQUARTERS headphone amplifier Reconnect the power cord only after signaling interconnections have been made The following precaution should be observed when working on the power supply unit Remove watches rings or other metal objects Use tools with insulated handles Caution Risk of electric shock do not remove cover No user serviceable parts inside Refer servicing to qualified service personnel Warning To reduce the risk of fire replace only with the same type and rating of fuse I Warning To reduce the risk of fire or electric shock install in temperature and humidity controlled indoor area of conductive contaminants Read the user manual and familiarize yourself with the functions before you attempt to use this equipment To prevent fire or shock hazard do not expose this appliance to rain or moisture Do not dispose of in fire to prevent injury or burns Also do not place the units near the heat sources such as radiator heat registers stoves or other devices including amplifiers that produce heat Do not disassemble the machine with power on If you do you may receive an electric shock Do not let children or grownups push anything into holes or slots in the case this could result in harmful electrical shock and could cause damage of the equipment Do not set these units near the water near following area bathtub washbowl kitchen sink laundry tub wet basement or swimming
13. pool Do not place heavy objects on the power cord If the cord is damaged fire or electrical shock may result In particular it is possible that one might accidentally place a heavy object on a carpet that covers the cord definitely avoid these situations Do not install the HEADQUARTERS headphone amplifier in a place where it might be exposed to oil smoke or steam for example near a cooking table or humidifier Otherwise fire or electrical shock may result Do not place the power cord near a heating device Otherwise the cord sheath may melt resulting in fire or electrical shock Obstruct the necessary all around ventilation especially DO NOT place the set close to curtains or on soft furnishing such as carpets Overheating can cause unnecessary damage and shorten the lifespan of the equipment No user serviceable parts inside Refer servicing to qualified technician Never remove the cover unless qualified to do so This unit contains dangerous voltage When you remove the power plug be sure to hold the plug Never pull on the cord Otherwise the power cord may become damaged resulting in fire or electrical shock Do not attempt to modify this equipment Otherwise fire or electrical shock may result Warranty is void on modified devices Do not damage process bend twist stretch or heat the power cord If the cord is damaged fire or electrical shock may result When you are connecting other audio devices to the H
14. st one 1 month and followed by repair service until this warranty expires on one 1 year from the purchase Customer who requests warranty service is responsible for shipping costs mailing from the customer and the returning shipping cost is covered by this warranty KingRex Technology also offers repair service charges of labor and or parts when warranty expires Exclusions from Warranty This Warranty does not apply to 1 Conditions resulting from misused abused disassembled unauthorized modification by the purchasers negligence or anyone else outside of our control 2 Conditions resulting from improperly maintained or placed in an unsuitable physical or operating environment 3 Conditions resulting from a natural disaster such as a lighting strike flood earthquake etc 4 The device identification labels i e serial numbers have been removed altered or have deteriorated beyond recognition Conditions Serial Number Store of Purchase Date of Purchase Customer Name Mailing Address Phone Number
15. stage would be reached the balance In this status switching the output selector will cause the sudden pulse output It might hurt your headphone or your power amplifier KingRex would suggest you to do the switch 3 minutes after power on 5 All KingRex parts and accessories are all in good quality and performance However we knew there still lots of users seeking the great Change the accessories as signal cable or power cord might have significant efficiency The HQ 1 amp HQ 1 PSU connected power cord is specially made for reserved purpose The ordinary Audio XLR cable should be not suit the HQ 1 amp HQ 1 PSU For avoid the unknown damages please contact with KingRex or dealers before you replacing the XLR cable 6 To maintain the consistence of the HQ 1 pre out amp phone out KingRex sets the output level equally The input level might be over for most of the integrated amplifier We would suggest you use HQ 1 with your power amplifier 13 Specification of HEADQURATERS HQ 1 ITEM SPECIFICATION Input Impendence Output Impendence Gain Frequency Response HQ 1 headphone amplifier with outboard Power supply unit 15k Ohm 1 8 Ohm 18 5 20Hz 0 7dB 80KHz 0 1dB Output power 1 THD N THD N Dynamic Range Channel Separation Signal to Noise Ratio Audio connectors Power consumption 100mW at 3000hm 170mw at 150 ohm 360mW at 60ohm 570m W at 30 ohm 0 00596 at 2Vrms
16. und How is the difference between switching power and linear power All of the amplifiers need current while them working or there won t be any good sonic performance as many detail will lost So the power source is very important for the amplifiers There will be three power sources most in common switching power adaptor linear power supply unit and battery power supply unit The switching power adaptor should be most convenience and common power source the users could chose however it is not a good selection for music connoisseur who cares the sonic performance much more than the obtain convenience as it has the most noise and distortion by the high frequency switching and harmonics in its design The linear power supply should be better choice for audiophiles It has less noise and distortion than the switching power adaptor however during the AC to DC conversion and rectification process there is still unavoidable following the unexpected noise and distortion That s because the AC power should pass lots of electronic parts as transformer diodes voltage regulators and components to be the lower current and neat DC The linear PSU will be a great design for the HEADQUARTER 1 as the pure power could affect the sonic performance a lot Sometime people already spend a lot of money for a really Hi End power supply unit That s why we design one reserved PSU for it All KingRex concern is for bring the fully enjoyment and happy listen
17. y to be walked on or pinched especially near the plug convenience receptacles or where the cord exists from the unit B The power supply cord of the unit should be unplugged from the wall outlet when it is to be unused for a long period of time Operation environment presentation Front panel details amp rear panel details HQ 1 in red panel color A KingRex Technology Co LTD Kingfie HEADPHONE AMELUER DGQUJARTERS S NC Headquarters MODEL HG T LINE OUT INPUT MADE IN TAIWAN DC POWER FROM PSU L q40P07 05 0 O Q Ef Nm k QXXES Ted KingRex Technology Co LTD M o o ssl 5005 oy S 1 VCC 65 POWER IN FUSE HQ 1 in Black panel color Z KingRex Technology Co LTD 9 HEADPHONE AMPLFER EADIGUJARTEIRS 9 Tan ps E 1 INS Z l C ON To 29 9 9090000000 ag 00000000000 CEN KingRex Technology Co LTD sj JL elitm NO AC POWER IN FUSE 77 ow 10 Connecting the cables and machine setting Input setting amp Output setting Red panel Black pan
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