J. Sound Lab – Tube Amplifiers
Tube Amplifiers:
“In audio applications, valves & tubes continue to be highly desired by most professional users and stereo enthusiasts, they advocate the use of tube amplifiers for home listening and say that tube amplifiers produce a warmer and more natural valve sound.” – Wikipedia
What makes single ended tube amplifiers superior?
– First, low level signal. There is no other topology that could handle low level signal in such a delicate manner as Single Ended amplifiers do. Push-Pull amplifiers simply can’t do that, feedback-based amplifiers can’t handle low-level signal properly as well. Even low feedback cause Push-Pull amplifiers affect the signal.
– Second, Single Ended amplifiers better keep the music.
– Third, even harmonics make sound warm and natural while keeping details and spatial information of sound source; odd harmonics are dominating in Push-Pull amplifiers. Hence Single Ended amplifiers produce the kind of sound that I call “TUBE SOUND”.
The last and the most important component of the amplifier is the Output Transformer. If one puts a cheap hardware in a proper and well-designed device-it will never sound as it should! Output Trans is a heart of an amplifier. ZERO NEGATIVE FEEDBACK!
I want you to understand that putting together the audiophile components of the highest quality, does not give the best results if you won’t have a complex attitude towards selection of these components. Remember this! One could remember hearing extremely expansive tube amplifiers with a more mechanical sound than transistor ones.
Why use tube amps:
Tubes have a sound that is different from other amplifiers, sound that happens to make amplified music sound better to the human ears. There are lots of technical explanations for why this should be true, but there is enough solid evidence that it’s a real effect to trust it. The one real reason to use tube amplifiers, is simple: they just sound better.
J. Sound Lab is a Subsidiary Company of MEG Tube Audio, based in Israel, which manufactures and makes tube valve amplifiers, headphone tube amplifiers and more… the company was founded by two brothers Edward and Michael Girshin, professionals with experience in tube sound design for over 30 years.
About the Author
Tube Amps 1: Why Tube Amps?
VINTAGE TUBE AMP POWER TRANSFORMER #12 
VINTAGE McINTOSH T SHIRT TAN XL amplifier integrated amp tube solid state 
Monacor Tube Amplifier Vintage Hifi Stereo Receiver Amp 
XXX Rare Sansui Tube Amplifier ~ PM-2020! 
ROE BIPOLAR 100UF 40v HI_END Tube amp CAPACITOR for NAIM Audio! 
Lot of 3 Tube Amp Covers Shields for small tubes CINCH SOS – 6 Lot # 104 
***** VINTAGE (1962-63) AIRLINE 62-9019 TUBE – REVERB GUITAR AMP BY VALCO ***** 
Sansui AU-70 Integrate Tube Amplifier ~ Rare Survivor! 
Scott 233 Stereomaster Stereo 6U8 7199 5AR4 12AX7 Tube Amplifier Faceplate 
Dynakit Tube Amp/Amplifier with 3 Working Tubes, No Audio! 
CALRAD AP-35 TUBE AMP AMPLIFIER PHOTOFACTS PHOTOFACT 
CALRAD SA-30 TUBE AMP AMPLIFIER PHOTOFACTS PHOTOFACT 
KIKUSUI PAB 350V 0-350V VARIABLE TUBE AUDIO MIC PRE AMP DC POWER SUPPLY 
Vintage Flotatone Tube Amp !!! Excellent for guitar !!! 
Tube amp project Dynaco? 
vintage RCA MI-12188A PPP 807 70w mono tube amp amplifier 
2x NEW TAD Tube Amp Doctor 6L6GC Vacuum Tubes 6L6, Matched Pair 
Ideal TUBE Amplifiers! Practical Triode TUBE Amps! Feedback Tube Amps! CIRCUITS 
Vintage Webcor Model 2010-1 Tube Amplifier Reel to Reel Recorder Works Some ASIS 
10 NOS TUBE AMP OIL CAPACITORS 0.0027uF 400V by GOOD-ALL 
SILVER GUITAR TUBE AMP PREAMP MIX TEST GEAR KNOBS K25 
Potted PAECO Filament Transformer 6.3VCT 4.5A 5V 2A etc for Tube Amp 
NEW TAD Tube Amp Doctor 6L6GC-STR Vacuum Tube TESTED 6L6 
6BN4A Tube Sylvania USA NOS McIntosh MR-65B Amp 
1952 RADIO CRAFTSMEN 500 TUBE AMP PROJECT WESTERN ELECTRIC w/ STANCOR PC 8414 
Shuguang Audio Vacuum Tube 12AX7B(ECC83) Valve Amp New 
Potted Powert Transformer 840V CT 75mA Tube Amp Ham 
1958 RCA RS171 Tube Amplifier 6V6GT x 2 tested and working. 
6CS6 Tube Westinghouse Canada NOS McIntosh MR-65B Amp 
6CS6 Vacuum Tube Haltron Japan NOS McIntosh MR-65B Amp 
1959 EICO HF 35 EL34 TUBE AMP MONO 
Two 6v6gta Vacuum Tubes Tube Amp Amplifier Phillips Sylvania 6v6 gt gta Pair Nos 
16 Western Electric Capacitors for Tube Amp, Speaker Crossovers, Etc. 
Rectifier Audio Vacuum Tube 5Y3 5Y3GT Valve Amp New 
LEGENDARY GROMMES 61PG 6L6 TUBE AMPLIFIER VINTAGE TOP OF THE LINE 
Western Electric Capacitors for Tube Amp, Preamp, SpeakerHorn, Early Silver Type 
4 NOS Daven/Shallcross Tube Amp Vol Pots/Attenuators, 30/30 ohm 2db, NR !!!! 
Western Electric 119C Rep Coil Tube Amp Transformers (111C, CD Player) 
VTG SET LAFAYETTE 224 STEREO/MONO TUBE AMP AMPLIFIER & LT-81 AM/FM TUBE TUNER 
5 TUBE AMP CAPACITORS 0.051uF 600V Sprague Bumblebee 
Western Electric Tube Amp Power Transformers, Pair ( One Trans NOS) NR !!!! 
Ei ECC-83 Vacuum Tube – From Antique Sound Labs MG Head Amp – used about 1 month 
Fisher 500-C Vintage Tube Amplifier Receiver Amp 500 C SMOOTH, WARM SOUND! 
Stereo tube amplifier Harman Kardon Citation V amp 7581 12BY7 6FQ7 has 6L6GC 
NOS SYLVANIA 5AW4 FULL WAVE RECTIFIER RADIO AMP TUBE 
Stereo tube amplifier Harman Kardon Citation V amp 7581 12BY7 6FQ7 with 6L6GC 
Shuguang Audio Vacuum Tube 12AT7(ECC81) Valve Amp New 
Fixed price LaRadiotechnique 12AU7 amp tube @ $33.00 ea 
Shuguang Audio Vacuum Tube 6V6GT/6V6 Valve Amp New 
Leak stereo 20 tube amplifier restored ! fine EL84 12AX7 GZ34 amplifier 
Sony SRA-3 stereophonic recording tube amplifier Vintage SRA3 
Raytheon 6X4W Ham Radio Guitar Amp TESTED NOS Tube 
RCA 7586 Vintage Amp Audio Vacuum Tube NOS NIB 
4 SYLVANIA JAN JHS 5726 6AL5 6AL5W MATCHED SET QUAD Amp Audio Radio Vacuum Tube 
1 RCA 6BS8 1960s BLACK PLATE Amp Audio Vacuum Tube NOS NIB 
Heathkit SP-1 Tube Pre Amp * Build Manual * Great 4 Troubleshooting * Testing * 
NOS NIB RCA 6DS4 (6CW4) Amp Audio Vacuum Tube 
1960s GOLD BRAND SYLVANIA GB JAN CHS 5Y3WGTA 5Y3GT 5Y3 Vintage Amp Audio Tube 
1960 HIGH FIDELITY **5*STAR** GE 6201 (12AT7 ECC81) SUPPORT RODS Amp Audio Tube 
Chassis Hole Punch Knockout Tube Amplifier Vintage New 
Professional Audio Grade RCA shielding cap for Tube Amp 
Tube 6N3 SRPP Preamplifier Kit Buffer Pre AMP For DIY 
Finished Tube 6N11 X-10D Buffer Pre AMP Base on Musical Fidelity–Golden Pannel 
Tube 6N3 Buffer Audio Preamplifier Pre AMP Kit For DIY 
TUBE AMP PREAMP RECEIVER TUNER AM FM TUNING BLUE METER 
Finished Tube 6N3 SRPP Preamplifier Buffer Pre-amp 
1x VISHAY MKP1848 70UF 700V 5% MKP CAP FOR HI-END TUBE AMP AUDIO CAP ROHS ! 
6x VISHAY MKP1848 70UF 700V 5% MKP CAP FOR HI-END TUBE AMP AUDIO CAPS ROHS ! 
1x VISHAY MKP1848 45UF 700V 5% MKP CAP FOR HI-END TUBE AMP AUDIO CAP ROHS ! 
2x VISHAY MKP1848 12UF 900V 5% MKP CAP FOR HI-END TUBE AMP AUDIO CAPS ROHS ! 
Orig 1953 Instructions AND Schematic Bogen J50 TUBE AMP 
YAQIN King 2A3 MS-2A3 Integrated Class A Tube Amplifier U 
Tube amp T shirt(vacuum tubes,guitar,amplifier,vintage) all sizes 
Western Electric Loudspeaker Tube Amplifier w/ Jensen Special Design Speaker 
NEW 44mm Tube Damper Silicon Ring fit vaccum tube KT88 6550 KT66 Audio Amp 10pcs 
CRAFTSMEN TUBE TUNER PRE AMP RC10 
TAD 7025WA (12ax7,7025,ecc83) Tube Amp Doctor 
NEW Tube Damper Silicon Ring fit vaccum tube KT88 6550 KT66 Audio Amp 10pcs 
EL34 Tube Amp Bare PCB – Upgraded design of Jadis JA30 
EL34 Tube Amp – Tube Rectified Power Supply Bare PCB 
A pair of The Radio Craftsmen mono tube amplifiers 6L6GT 6SN7GT 5U4GB MODEL 500 
2 VINTAGE Nichicon 1000V 2uF Oil Capacitor Tube Amp 
8x NEW Wima MKP10 100nF 0.1UF 160V 5% TUBE AMP AUDIO CAPS GREAT FOR TDA1541 ! 
Fork Fibre Turret Tag Board Tube Amp Classic 60Lug Blue 
Tube amp scheme T shirt (EL34,EL84,ECC83,Mullard,rca) All Sizes 
2 Telefunken Klangfilm tube amp modules ECC83 EL95 PP 
2 Telefunken Klangfilm tube amp modules 2x EL84 PP 15 Watt 
2 Sennheiser 76 tube amp input Transformer 
Dynaco Stereo 35 Tube Amplifier Review, 1964, 1 page 
Conrad Johnson Premier 8 Tube Amp Review, 4 pgs, Info 
VINTAGE REALISTIC SAF-40B STEREO TUBE AMPLIFIER JAPAN 
Beautiful Harman Kardon Ad, 1 pg, 1959, Citation I, II Tube Amplifier, Preamp 
Pilot Tube Amp Ad,1955,Tuner,Pre,PA-913,AA-905,2 pgs 
GE Uni-Level Tube Amplifier Ad,1955,Rare Ad,Article 
Scott 135 Tube Amplifier Ad, 1959, 1 pg, Article, Features, Beautiful Original! 
2 vintage output Transformers for Tube Amp EL95 EL84 S3 
2 Tubes RSD smooth plate 12AX7 ECC83 for tube amp 2 
2 Tubes RSD smooth plate 12AX7 ECC83 for tube amp 
2 Tubes DYNACORD 12AX7 ECC83 for guitar tube amp 
2 Telefunken output Transformers for SE Tube Amps (49) 
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