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Project Starlight tube headphone amp

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Project Starlight tube headphone amp
Description:

You are looking at the birth of a super affordable legend! This is the Project Starlight amplifier. Starlight is a Tube / Opamp hybrid capable of rolling opamps as well as 6 & 12V dual triode tubes. Stock output stage features quad 4562's and she sings like an angel. She has variable output resistance like her bigger brothers and a fully dedicated tube heater power supply. Many features are brought over from the loved Sunrise II and Horizon amplifiers. We also upgraded the PCB's on production units as well as re-designed the chassis. Starlight really holds her own now in all aspects! Both the kit and built amplifier will include a chassis, power supply, all parts + PCB and tube. Everything you need. Project Starlight was designed by headphone enthusiasts Jeremy H (based in the USA) and Frans G (Based in the Netherlands). Our goal with Starlight was to produce the best bang for the buck we could yet still maintain our high quality parts standards and outstanding sound quality and WOW did we hit the mark! Project Starlight will let you roll a LARGE selection of 6 & 12V tubes and will power them properly with a dedicated heater power supply. Some other features like selectable output impedance and super easy bias adjustment are things other manufacturers just do not offer. We cannot wait for the audio community to get its hands on this little gem. Enjoy! Features of Starlight: -Easy Set bias via LED indicators. No need to use a multimeter anymore when rolling tubes! Access from the side of the amp, no removal of top cover -Easy access to bias trimmers. You can use a jewelers screwdriver to dial in the bias through the top cover, no need to remove the cover to set -Access to the 6/12V jumper through the top cover, no need to remove the top -Output impedance selection can be set from the top of the amp -Revised protection circuit protects your headphones and audio gear -Revised circuitry overall -Ability to run a pair (one per channel) or quad opamps for increased output While Project Starlight shares some cost saving measures, This amp has it where it counts! This amp is open, dynamic and plays with authority. In short, this is not a cheap toy with counterfeit parts on a cheap PCB. This is a beautifully designed & engineered amp you can truly own and enjoy for a lifetime. More info on Project Starlight: -Designed in the U.S. & Netherlands. Kitted or Built in the U.S. depending on how you order / 2 YEAR WARRANTY ON G1217 BUILT AMPS! -All parts sourced in the U.S. From reputable distributors, NO FAKE COUNTERFEIT PARTS, CAPACITORS OR RESISTORS! -Only top quality components used, such as Bourns pro audio potentiometer, Bourns trimmers, Low noise Vishay/Dale RN, CMF and CPF 1% resistors, Nichicon Roederstein -capacitors, LM4562 opamps, Neutric phono jack. Ruggedized PCB RCA jacks, Rugged 5a power switch ETC… -Beautiful piano gloss black .096 thick double sided, PCB with top and bottom ground planes. Will not bend or flex while inserting a tube! -Turn on / off protection for your headphones and audio gear -Supports a wide range of 6V or 12V tubes with voltage selection -Built in test points to easily and quickly dial in bias or dial in bias via the Easy Set LED indicators! -Fused with reverse polarity protection -Chassis is beautifully laser cut and serialized. -Chassis hardware features all stainless steel allen bolts, washers and nuts. Stand-offs are aluminum -Each factory built amplifier is meticulously hand built and tested prior to shipping. Solder work is outstanding and clean with no flux or fingerprints left on the board. Pride in workmanship is evident from every angle of this amp. What you see in photos is the quality of build you will get! For Advanced Tuners: -Input capacitor section is drilled for multiple capacitor footprints. 2, 2.5, 3.5, 5 or 7.5mm spacing available -Output capacitor section is drilled for 7.5mm -Power supply capacitor section is drilled for 7.5mm -Variable output resistance, selectable from 2.5 to 70ohm Actual Project Starlight measurements: -Opamp output stage / quad LM4562 -Power consumption: 7.2W peak. -Power supply: 24VDC (0.3A peak) -Input Resistance: 21k -Input Sensitivity (6N23): 270mV (dependent on tube) -Gain: 20dB (dependent on tube) Changed from the original higher 26dB specification -Max Output voltage (no load): 7Vrms at 120ohm -Output Resistance: Selectable 2.5, 70 -Frequency Response: 15Hz – 80 KHz (-0.5dB) with 32ohm load -Frequency Response: 4Hz – 230 KHz (-3dB) with 32ohm load -Signal to Noise ratio: 91dBA (dependent on tube) -Crosstalk: -87dB (dependent on tube) -THD: > 0.015% (dependent on tube) -Suitable for: 16-300ohm Headphones

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