300b vs 45 tube If you choose small Triode stick with the 300B(more power and better sound). The. The 300B vacuum tube must be one of the most talked-about vacuum tube models, especially in Asia. The European DHT power tubes, to me, seem to lean toward a solid state sonic signature, detail over tonality. The 45 tube rolling possibilities here are wide open and hearing the 45 as both driver and power tube is pretty eye opening. Aug 6, 2023 · Currently, I'm using a pair of Western Electric 300B tubes in my 300B ANK tube amp. For pushpull amps, I also like a number of old and new designs that employ 6L6 and KT66 pentodes. 2a3 vs. The 300B tubes can output up to 8 Watts of clean power if driven harder. 8 V. Others on the other hand revere it as the lighted path to sonic bliss. Some 300b amps are as transparent and clear as mountain spring water. 209. single-ended EL34. The 300B does have an extremely appealing liquid midrange that can be intoxicating. This Valve is rather new, the units I tested where some of the first series units. 5 amps per tube. Dec 30, 2020 · Below photo is A typical RCA tube manual sheet. Sep 5, 2003 · 300B is the king for most systems and music tastes. As seems typical with these ancient tube types, the globe shape does sound more open and transparent to me, while the ST shape has more "slam" and body. Jul 4, 2023 · I tend to prefer the 45, 2a3, 300b over the larger transmitting-tube SET amps (211, 845) although these can sound very good. The power transformer needs to provide about 640 or 650 volts center tapped at 150 mA or more, 5 volts at 2 amps, and 6. I have built SE 45 amps. Voice/Fax: +7-095-407-0310 E-mail: el-tubes@mtu-net. 3 volts at 4 amps. I might build parallel 45 amps if I could get inexpensive NOS tubes that match well. " Nov 1, 2004 · Hi, my favorite tube is the 45, I too also have a pair of EML 45 mesh and by far sound better than any nos 45 that I have heard. It seems the DRD 300B is the only one of the lineup that doesnt us all AC filiments on the tubes. RE: Some of the Best and Worst sounds I've heard are from 300B, posted on May 25, 2010 at 21:14:50 Dec 17, 2024 · The 211 and 845 tubes are in a different part of the tube world from the four tube #s you listed. Aug 28, 2010 · I'd say that the sound groups together around tubes of one type - BUT there is a big difference between "300B" tubes depending on who made it and when. However, the best match with the AL5, in my opinion, is still the 45 SET. It's like there's more layering plus the mids are richer. Price $80 each from El-Tubes, plus shipping import duties etc, list in US around $150 each. Jan 26, 2016 · These all went into a spreadsheet. ru . This is an amazing tube, and this amp is a masterpiece. I wouldn't go with 45 due to filament requirements, 71A is 250mADC, and you can filament bias the stage with 150R unbypassed cathode resistor for ~2k5 drive which is fine, or you can ground the filament return and DC couple the input tube. At even lower power, there is the 45, which sort of fits between the two. In fact an 845 ,to me, sounds like an 45 on steriods. 34: Posted on July 29, 1999 at 06:25:49: Scott W Jan 15, 2005 · Unfortunantly, I've never had the pleasure to compare between the 2A3 and the 300B (the 300B being the very first SET I've heard). cubeaudio. 45 2A3 300B 211 845 805 02 04 08 Canary CA-301 / Canary Reference One / Cary CAD-300SE / Cayin Spark 743D / Coincident M300B / Fi 300B / Golden Tube SE 300B / Aug 1, 2019 · I built with 71A driver to 2A3/300B (JJ type 2A3-40W mostly 300Vp-k 65mA into 3k3), SE IT to PP output and also direct coupled in SE. More than comparing the two tubes, I mentioned other factors contributing to how an amplifier sounds. It's taken me a long time to walk down this road. I have a love-hate relationship with the 300B. My speakers are very high sensitivity, so 2-3 watts for the 2A3 and 8-10 watts for the 300B is not a deciding factor. In many respects differences between tube types-- 45 vs. Aug 29, 2003 · In the past, besides a few examples, I have generaly preferred the 2A3 to the 300B but I have heard good examples of both amplfiers. It can be a very fine sounding tube, but its prices make that fidelity less appealing. Good 300B tubes seem expensive, 2A3 not nearly as spendy. Emission labs mesh globe 45 are probably the pinnacle of the 45 tube type. Mar 18, 2010 · A lot will depend on your personal tastes. I would take a really good 211, 300B, 2a3, 45 or 845 over the best PP tube amp using KT(anythings) or EL(anything) - if cost is no object. The music ranged from Springsteen to Mussorgsky, but in between, mostly well-known jazz. There are times I really want the warm, liquid tone of a 300B. Many other tubes sound as good or better than the 300B and cost far less (the 13EM7 kicks its ass all day long for $4-$6 a tube!). But if you choose the Big Triode amp, forget 211 & 845 tubes, the best sound Big Triode is the 805 Top Cap, it had a huge gain of 50, not 6 or 12, and is a very detailed tube. 211 -- is more significant, and arguably difference between brands can be on the same magnitude (for example an EML meshplate 2a3 will sound VERY different from a JJ meshplate 2a3). Tube data for the 45 can be found here. They are also pentodes or beam power tubes, which have extra elements inside to increase power output. Sep 5, 2016 · There are a lot of different 300B amps out there that sound better, to me, than the Sophia, but, decent amps are somewhat costly because they employ quite expensive output transformers. sophiaelectric. The 300B tube was introduced in 1938 May 8, 2020 · Of course there are some exceptions - but IME - a really good 300B is better than a really good PP tube or SS amp - even if 300B SET is your least favorite tube type. 2 X 45 Watts Oct 18, 2024 · 845 vs 300B Tubes When it comes to vacuum tubes in the realm of high-fidelity audio, the 845 and 300B tubes stand as two of the most legendary and revered options. More like the 300B mids only without stopping there. Dollars per watt adds up when you have to use 2 or 4 each 45 tubes per mono block. They are from current production. Jun 4, 2024 · That's an operating point that appears to give the tube some room to breathe, whereas 12 mA at 175 V is crammed down into the lower-right part of the plate characteristics. Audio Asylum - Tubes Asylum Generally, would someone compare/contrast 300B vs 2A3 vs 45. 2A3 vs. The 845 was never designed as a wide audioband tube. A great assortment of early 1930s globe 45 tubes. The front stage uses an imported Tung-Sol 6SL7 GT for amplification and two former Soviet 6SN7 vacuum tubes for push. Likewise, for large orchestral recordings the GM70 is hard to beat. 845 vs 300B Tubes When it comes to vacuum tubes in the realm of high-fidelity audio, the 845 and 300B tubes stand as two of the most legendary and revered options. Aug 28, 2010 · Small Triode(45, 2A3 or 300B) or Big Triodes (211, 845). In other words, you'll get loads of that 300B sound if all you're using is an RC-coupled 6SN7. I think to use 6sn7 driver for big tubes like 300B, 845, 211 it is similar to using 1 liter engine in track. Here is an interesting 45 tube that I was sent by a friend of the site. They run a B+ close to 1000 volts, about 2X the ones you listed. 845 Intergrated Tube Amp. I find the 300b to have a really great sounding midrange, but, it is a bit more dynamically polite at lower volume levels than the 45 or 2a3 and it is a bit loose in the upper bass. Dec 2, 2005 · The neat thing about Gary's amp is that you can compare 45's, 46's, and 300B's under conditions where almost everything else is the same. Oct 20, 2009 · I have done some much smaller scale experiments with the same basic results. If you need the power, I would also consider the 211 triode versus the 845. Sep 12, 2018 · This tube can run like a regular 45, or up some numbers and run the right transformers and it can put out more power. So I spared them the shame. 300B's have more gruntdouble the spotlight and the velvet painting is now Elvis. Jan 16, 2012 · Aside from the 300B (WA5) vs 45 (Minute) tube differences, the two amps actually use the same GZ34 based rectifiers and 6SN7 input tubes. The 45 is certainly one of the best sounding tubes of all time and has become an audiophile classic. Both tubes do well in the treble, but if one finds a situation where things get a bit too hot, it will be the EL34 rather than the 300B. Critics like to pan it as hyped-up, before introducing their own favourite directly heated triode tube. Sophia Electric 300B does have some sonic characters of 45 tube. The 300B version opts for the DC filiments on the 300B tube which probably account for that extra low level of noise. 5 mesh $933 PX4 Mesh - $1086 PX25 -$995 300B Mesh - $1086 300B-XLS $1029 320B-XLS $1034 AD1-mesh $1133 520-V2 $1361 520- V3 $1330 1605 Sep 17, 2005 · The 845 will outclass the 300B in bass fullness, although in some 845 amp designs, the bass is bloomy and bloated. Leaner than a 300b but with better bass and top end. Box 84 Moscow 127560 Russia. webzone. I was compelled to purchase the BEZ Model T3A 2A3 SE amp due to the reviews I've read on how 2A3s sound a bit more nuetral, but I really wanted more output than 3. I had different set 45 amps but the best sounding circuit to me is what I have now which is a interstage coupled 45, which uses llundahl interstage transformer and tango output transformer. 5 inch Jan 2, 2021 · One guy tried dozen different driver tubes in 300B amplifier including 2A3, 45, 6F6 and he told the best driver for 300B was 300B, and the legendary Japanese designer Sakuma used 300B driver in his 300B amplifiers. The rear stage uses two customized 300B vacuum tubes for single-ended Class A power amplification. Dec 17, 2023 · Of the smaller tube types, I personally tend to like the 45 for its tonal balance, tight and powerful bass and overall luscious sound. We tried a JJ ECC83S, and two vintage Valvo tubes, one produced in Heerlen, and another from the Hamburg plant. New & NOS power tubes from Electro-Harmonix, Genalex, JJ & other US made tubes! May 8, 2020 · 300B vs. com Mar 2, 2013 · It is not so much a case of some huge difference, as so much a matter of degree. Jun 10, 2017 · Still SETs have all been good - the 300B is what got me into SET amps and while now they are sort of a last place SET tube for me - they have their advantages - as does 45 and 2a3 and the 211. s when compared to a 300B. (Restricted to small 45/2A3/300B types in one test bed and EL34/6550/KT88 in another - not directly compared. The sound from 45 tube is simply pure, seductive, and even magical! Anything good that can be said about 300B tube, well, the 45 can do better, with only one limitation of 2W output, versus 3. To get personal experience with single-ended 300B vs. Jan 3, 2022 · The 300B vs a GE7025 that is the best small 12AX7 I used and I tried about all tubes should be as good as the 300B power tube used as a lower gain preamp tube. I currently own 45,2A3,300B and GM70 SET amps and enjoy each with different types of music. The 300B is the most linear power tube ever made. However, the extreme contrast between the sound signature of the two amplifiers may be more than just the 300B/45 tube. All three tubes had a warmer and denser tone compared to the Telefunken (no surprise really), and the host liked the Valvo Heerlen tube the best. Beuatiful mesh globe 45, vintage and modern next to a Rogers 45 globe from Canada. are *directly* heated tubes, meaning that the filament itself acts as the cathode. May 8, 2020 · Of course there are some exceptions - but IME - a really good 300B is better than a really good PP tube or SS amp - even if 300B SET is your least favorite tube type. 5 WPCthe Model T3B 300B had 8 WPC, so I chose this amp for my Cornwallsthat's all there was to it. 104. The 300B tube requires 5 volts and 1. The filament regulator IC can provide up to 2. 300b tends to deliver a richer sounding midrange and a warm bump in the upper bass that is part of the “magic” of that tube, but, compared to the 2a3, the 300b sounds murky and not as dynamic and alive. Thoughts on either the driver tubes or the kit that is higher quality? Jan 19, 2024 · I like 2a3’s, provided the speaker is efficient enough. Oh and I've never heard the 211 tube or any of the big triodes that and the 805, and 845 but would love to some day. Dec 29, 2020 · From about the late 1940's on, these tubes were developed to eliminate noise associated with earlier power tubes like the 2A3 and 300B. I guess i'll have to talk with Don G about the iron and cap changes vs as is. I have built 2A3, 6B4G, and 6A3 amps. The early 45 tube versions were called the UX245 or CX- 345, and belongs to one of the early vacuum tube models from the 1920’s. 5 increments allowed. I keep all the metioned tube SET amps around for my mood changes and musical preference at The RCA Cunningham engraved base tube on the right is an early 1930's tube. I still have trouble finding any tube amp better than what I have heard out of the Gaku-On/Ongaku/Jinro and probably Tomei and OnkoruII all of which use Jan 9, 2003 · It's when they are driven by feeble 5-8mA driver tubes that the characteristic 45, 2A3, 300B, or 845 signature appears. In the right system (a adequately built amp mated with a highly sensitive speaker) the 45 can make music that is sublimetruly wonderful. "For reference, the more commonly seen audiophile 300B tubes first debuted in 1930s as the Western Electric 300A. Now, with my current AL5 speakers, I find that the 300B adds too much coloration to the sound, and the 2A3 matches better, making the sound fresher and clearer. if I went this route I would get the tubes first, try them in the Yamamoto and confirm they even sound like a true 45 (4-5W) Mar 26, 2008 · Is the 45 the best power tube ever made? Well that depends on your definition of "best". Doubt you will find many comparisons you are looking for because only a couple of companies make new 211 and 845 tubes best I can find. Oct 10, 2013 · The 45 is sublime timbre, imaging, palpable presenceeverything is like a fine still life on velvet. I'm not so sure as two 300b SET amps can really sound nothing alike. Aug 24, 2020 · Changing this tube had as much effect as the 300B tubes. Among the most common low-powered triode tube types--the 300B, 2a3, and the 45, I personally like the sound of the 45. Check out more information at www. Apr 5, 2021 · However, one outstanding strength has made audiophiles rediscover it decades later. May 25, 2010 · Clearly, how 300B tube sounds depends heavily on the specific 300B tube and amplifier used, but also HEAVILY on speakers used. Feb 18, 2017 · Unfortunately many use the 300B to get more power, not to get more finesse. We newly introduced a Globe 45 mesh plate tube, several users commented that has killer bass for a 45 tube and sounded better than vintage 45 tubes with high end horn speakers. . "The 45 tube is a direct heated power triode tube. Output Tubes 45 $751 45B * - $774 Special order only 45-Mesh $812 45-Mesh Globe Call for Price and availability 2A3-Mesh Globe Call for Price and availability 50 $995 2A3-S $786 2A3-Mesh $842 300B $828 300B/2. These tubes are integral to the audiophile world, offering unique sonic characteristics that influence how music is experienced. The 45 tube and the 845 are in my opinion the most neutral of the triodes. In general, the older tubes sound a little more laid back and relaxed, while the EML-EML combination really has a grip and drive that feels dialed up to 11. Svetlana P. Feb 8, 2019 · The 45 does not have the mid range emphasis of a 300B, so more FR neutral. Sep 29, 2011 · The Sophia 45's are sounding more like live music then the RCA 2A3, JJ 2A3-40 and Shuguang Treasure 2A3-Z tubes i have. O. My main setup is a KT88 amp complete setup in my other 18 x 18 feet room which is 45 watts per chan with a 6. It's a fine sounding amp, too but I didn't like the 300B's as much as the low power tubes in it. ) These tubes have differing transfer functions and in proper controlled experiments do sound and measure differently. I don't recall what flavor 300B's he was using, but knowing Gary, they were probably OS WE's. Feb 20, 2024 · Bottlehead Stereomour II 2A3 or Kaiju 300B, or the Elekit TU-8600S 300B amp. The 46 - a direct-heated tube with two grids, sounds fantastic but very low power. allied333 , Jul 20, 2022 #16 Aug 28, 2022 · I love the 45 tube, it was my favorite power triode of the popular types like 2A3 and 300b, it provided the best sound but many choose 2A3/300b due to higher output power but they don't touch the 45 in quality. (courtesy of Wall of Sound) "All of the 300B type tubes in this review are darn nice to listen to: the differences between them aren’t as dramatic as one might expect. For opinions on common 300B tubes, take a look at Noam Bronstein 300B tube review/comparison. 5-4W from 2A3, and 8W from a single-ended 300B. 45 means 10. The 2A3, 300B, 845, 805 etc. Jul 20, 2012 · 2A3 tube amps correctly implemented with the right driver tube, output transformer and good bits internally have a purity of sound that defies the 3. No, 300B tubes weren’t designed to pound out heavy metal, rap or techno. Oct 12, 2013 · crucial to the sound. Jul 31, 2005 · This tube is the most romantic of all triodes. (I like my 300B's, but they have remained in the closet for quite a while. 2A3's or 45's? I understand the power difference. But getting quality pairs or quads is hard. I'm wondering if changing from the WE to the Takatsuki would offer any benefits. 4 Vrms on the grid, or a swing of +/- 14. The rating scale was 0-10, with minimum 0. As far as I am concerned either tube type is capable of truly excellent sound. Some may say that the 2A3 is more pure and has more clarity and the 300b is richer and has a fuller tone-body. Some new production "300B tubes" require more filament current. Oct 10, 2013 · I've just ordered my Stereomour and the big decision is which way to build it. 45. 157. 300b vs. Feb 19, 2017 · The most interesting data point I have was Gary Kaufman's "ragtop" amp -- which was configured to be able to run 45, 46, or 300B as the power output tube (with some minor jumpering). I wanted to judge these tubes as “all-rounders”. Listening to a pair of 2a3 SET monos as I type this btw. Is there a vast difference in the sound? What are your impressions if you've listened to both types of tubes in the same amp? Sep 21, 2011 · I suppose the 300B sounds maybe sort of 'rounder' in that sense, but again it depends on the circuit, as well as fine tuning with passive parts to one's liking -- meaning coupling cap types, carbon vs metal film resistors, tube rectification vs SS, and so forth. It will give a little more bloom in the upper freq. The 2A3's are more dynamic, like the same still life with a spot light focused on it. 5 watts output. el-tubes. TJ 300B Mesh Anode Globe. Jun 4, 2024 · A 300B SET (which I didn’t have at the time) would have been a better match. euTh Jun 21, 2018 · The 300B can paint the sort of beautiful colors no EL34 can. ru Website: www. The only tube I have found to sound better than a 45 is the 4P1L, it swept me off my feet so I swapped over from my critical listening Dec 24, 2021 · The high voltage uses two customized 5AR4 vacuum tubes for full-wave rectification. The 45 is an excellent tube but the others have their magic as well. 300B vs 2A3 - Which Tube Sound Best? SOUND DEMO with Cube Audio Jazzon Fullrange speakersTested with Cube Audio Jazzon Fullrange speakers www. In my personal opinion, if you don't need the power, I'd go with the 300B (or 2A3 or 45 even). Then, I look into necessary signal swings for the 45: 36 Vrms on the plate with mu=3. TubeDepot carries a selection of 2A3 / 6A3 / 300B Power Vacuum Tubes. 2 amps for its filament. Aug 2, 2023 · I do love the 45 tube it sort of combines the best qualities of the 2a3 and 300B but as stated above such low power. Even Western Electric tubes vary depending on age (which also changes their manufacture and materials slightly). I tried some of the newly built 45 tubes, (Chinese and EML solid plate) but to my ears, nothing has bested vintage OS 45's. They also throw off lots of heat reportedly. bbctg jrppu dbzsetrb oslq nzg arl owqrieh gbkl gepbzg ygtbrl