TRUMPET Vacuum Tube MM Phonostage
Contents
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3. age Be sure to connect the ground lead to the grounding lug near the inputs Do NOT operate unit without tubes installed Connect the power cord to a 120Vac source Turn on the Heater switch and wait for 30 to 60 seconds Then turn on the high voltage The indicator lamp will turn green The Trumpet requires about 30 minutes to warm up and sound its best which is typical of high quality tube equipment Set both Mute Polarity switches to the right or left for inverted signal Center position is mute Tube Rolling The Trumpet responds admirably to tube rolling New old stock NOS tubes are generally the best offering various sonic improvements Different tubes sound differently and the final result becomes a matter of personal taste Always replace tubes with their equivalents Do not use for example a 12AT7 in one of the 12AX7 locations Starting from the rear of the unit near RCA jacks the tubes are in order 12AX7 12AX7 12AU7 and 12AU7 It is best to use matched tubes in matched left right pairs TRUMPET Vacuum Tube MM Phonostage
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5. d TRUMPET Vacuum Tube MM Phonostage Made in USA TRUMPET Vacuum Tube MM Phonostage 2 Copyrights amp Trademarks Copyright Hagerman Audio Labs 2012 All rights reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent Disclaimer The information contained in this document is subject to change without notice Hagerman Audio Labs shall not be liable for errors contained herein or for consequential damages in connection with the furnishing performance or use of this material Warranty Hagerman Audio Labs warrants this product free of defects in materials and workmanship for a period of 10 years 90 days on tubes If you discover a defect Hagerman Audio Labs will at its option repair or replace the product at no charge to you provided you return it during the warranty period transportation charges prepaid to Hagerman Audio Labs This warranty does not apply if the product has been damaged by negligence accident abuse or misuse or misapplication has been damaged because it has been improperly connected to other equipment or has been modified without the express written permission of Hagerman Audio Labs This warranty is limited to the replacement or repair of this product and not to damage to equipment of other manufacturers Any applicable implied warranties including warranty of merchantability are limited in duration to a period of the ex
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7. press warranty as provided herein beginning with the original date of purchase and no warranties whether express or implied shall apply to the product thereafter Under no circumstances shall Hagerman Audio Labs be liable for any loss direct indirect incidental special or consequential damage arising out of or in connection with the use of this product Hagerman Audio Labs PO Box 61911 Honolulu HI 96839 808 383 2704 voice www haglabs com TRUMPET Vacuum Tube MM Phonostage 3 Description The Trumpet is a state of the art MM phonostage that uses balanced feedback free differential triode gain stages and passive equalization This topology offers incredible linearity and low distortion combined with unrestricted dynamics and clarity delivering a hugely open and clear sound The massive power supply is fully choke regulated for clean impulse free current draw from the ac line The Trumpet has earned Stereophile class A recommendation and industry acclaim Specifications Item Specification Gain 44dB Input Impedance 47k ohm Output Impedance 750 ohm RIAA Response 0 5dB from 20Hz to 20kHz Bandwidth 5Hz to 250kHz Distortion 0 03 1kHz Noise 80dB ref 5mV A weighted Overload 250mV 1kHz Size 7 x12 x 10 Power 120Vac 70W Tube Compliment 12AX7 x 4 12AU7 x 4 TRUMPET Vacuum Tube MM Phonostage 4 Operation The Trumpet installs between your turntable and linest
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