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Orthodynamic Roundup
Seinfeld, fourth season, episode #24, "The Pilot" pt 2.- MDR30
- Post #27,205
- Forum: Headphones (full-size)
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For 6AS7G tube rollers here .....
My initial impression of the K-R Tubes' 6AS7G (RCA) leaned towards a bright, clear sound (not in a negative sense). After a few days it mellowed and approached the sound of the original RCAs, placing itself among the best of them. Still with its own character. I like it and will let it play for...- MDR30
- Post #9,612
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For Sale Headroom Total BitHead amp/DAC
- Price
- 45.00 EUR
- Condition
- Excellent/Like new
- Negotiability
- Firm
- Ships to
- Anywhere
A classic amp/DAC designed by legendary Tyll Hertsens of the former headphone site Inner Fidelity. A small power pack that, according to the instruction manual, can handle most things: "With the exception of AKG K-1000's and electrostatic headphones, your BitHead has enough power to drive any...- MDR30
- Listing
- Comments: 0
- Category: Portable
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Free To Good Home Free foam for Beyerdynamic DT100, 150, 480 etc
- Price
- 0.00 EUR
- Condition
- New in box
- Negotiability
- Firm
- Ships to
- Anywhere
Foam to be placed under the pads on Beyerdynamic DT 100, 150, 480 etc. Free if you pay postage.- MDR30
- Listing
- Comments: 0
- Category: Full-Size
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For 6AS7G tube rollers here .....
Yes, I figured that much. What I am interested in is if they were a well-known player on the market, if they sold to trade or retail/consumer. And what about the abbreviation- not Ken-Rad to be sure. I'll try it in my amp tomorrow but I guess it needs a few days of burn-in, brand new out of the...- MDR30
- Post #9,611
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Found a pair of these. Obviously of RCA manufacture, but is there any information on B-K Tubes Inc.? Apparently the had their office in New York City.- MDR30
- Post #9,609
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Referring to my question of when RCA switched from one digit yearcode to two, gibosi answered it earlier in this thread. https://www.head-fi.org/threads/for-6as7g-tube-rollers-here.410326/page-438#post-16021091- MDR30
- Post #9,608
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For Sale Reflektor 6N26P - Russian super version of 5670/2C51
- Price
- 60.00 EUR
- Condition
- New in box
- Negotiability
- Or best offer
- Ships to
- Anywhere
Selling a pair of the rare Reflektor 6N26P NOS, equivalent to 5670/2C51 but with twice the power capability. This tube type is used by Schiit and iFi among many others. Draws a little more heater current but that won't be a problem for most good headphone amps. The Reflektor 6N26P is a military...- MDR30
- Listing
- Comments: 0
- Category: Cables, Speakers, Accessories For Sale / Trade
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For 6AS7G tube rollers here .....
It's not unusual that manufacturers famous for one line of products also make money on somewhat unexpected merchandise. I guess the two inventions above brought them income from production, licensing fees etc. As for the Tung-Sol 5998 I mentioned earlier, there is also number on the base, 609...- MDR30
- Post #9,607
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Thanks to the info in this thread, not least from Mordy, I think I figured this one out: June, 1967. Agree?- MDR30
- Post #9,602
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
What about this, 1956?- MDR30
- Post #9,600
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Fascinating stuff.- MDR30
- Post #9,596
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Well, the SC mark I haven't seen or heard of before. What is "inspector 71" referring to?- MDR30
- Post #9,594
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Thanks Mordy. The first tube in my previous post (1949) also has this print: A third example: And a fourth, this one made at the NJ plant for HP: I wonder when they switched from one- to two-digit year designation.- MDR30
- Post #9,592
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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For 6AS7G tube rollers here .....
Have a handful of the trusty old RCA 6AS7G but have not been able to definitely crack the date codes. Here are two examples. The first may seem easy to decode, but numbers can be deceptive. This has the old RCA logotype and bottom getter. The second one is a bit trickier. Later production...- MDR30
- Post #9,590
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
Constant Current Source. Check internet. It's also the acronym of Collective Consciousness Society, a big band with Alexis Corner on vocals, who made some notable albums in the 1970s. Try their debut:- MDR30
- Post #999
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
The AJCCS is of course an OTL amp. Those are the mains transformers, one for the heater and one for the high voltage. A single mains transformer can be custom made (and is on order), less space and possible hum problems but higher cost. May be available out there as well, secondary 6,3V and 125V AC.- MDR30
- Post #997
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
As a few people have messaged me and shown interest in the Audiotailor CCS amp, I'd like to explain the background of the project in a few words. After living with and appreciating the original Audiotailor Jade for quite a few years, we realized there was a potential in the basic design that...- MDR30
- Post #994
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
Well, you seem to have built a mighty fine adapter, your impression of the balanced sound from the Audiotailor Jade certainly points in that direction. The most important thing with DIY is having fun, trying new solutions and enjoying the results.- MDR30
- Post #993
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
Hi Joe, good to have you back in this thread! We all look forward to your next projects, whether new creations or expanded versions of Audiotailor Jade. I know you have many exciting ideas that are waiting to be realized. If you pick good acoustic recordings of voices and instruments in any...- MDR30
- Post #990
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
A NEW TAKE ON AUDIOTAILOR JADE For quite a few years, I’ve had the idea of developing/modernising the original Audiotailor Jade circuit, just because it’s such a good and enjoyable amp. A deceptively simple yet very clever design making the most of the few components involved. The man behind...- MDR30
- Post #987
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
That's correct. And it doesn't matter in which jack you connect the TRS 1/4" plugs, the only thing is absolute phase changes when you switch output between them. Which might be interesting to check for those who are so inclined.- MDR30
- Post #984
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
It's not so easy to use existing adapters. You need a Y-split, or even better - and simpler - a braided balanced cable where you can just connect the four leads to a four-pin XLR (or whichever plug/jack you have, Pentaconn/TRRS 3,5mm etc) according to the sketch below. Normal connection for...- MDR30
- Post #979
- Forum: Headphone Amps (full-size)
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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
An unusual tube combination that I haven't tried before. Initial impressions are quite positive. This is the first 6AS7GA that I've ever tried, the smallest type in the 6AS7G/6080 family. Its sonic reputation is far from illustrious, but to my ears it sounds fine. The small T12 bulb makes it...- MDR30
- Post #974
- Forum: Headphone Amps (full-size)
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Show us your vintage headphones!
This is a living legend of a product, kudos to the man who invented it (forgot his name). Gilbert Briggs and Wharfedale made several groundbreaking inventions, including the metal blade cone suspension.- MDR30
- Post #3,095
- Forum: Headphones (full-size)