6sl7 tube vs 12ax7. As far as the rear stage, it relies on 4 KT88/6550/EL34 tubes to deliver single-ended power amplification belonging to Class AB New Sensor is a US brand exploitation company and has acquired the trademark rights from all the old manufacturers of distinction A tube wears out mainly due to usage and heat All our Fender and Marshall Tube Sets use Tung-Sol 12AX7 Aug 13, 2008 · Yeah, those 6SU7's are nice These are authentic diamond based, hi quality used, as new, tested strong, audio tubes made to last 10,000 hours And then all my good tube testers we also provide factory matched! All the tubes have 15 months warranty! 6SL7 I understand they tend to be more microphonic, but otherwise not too much different in character from 12AX7 tubes Aug 26, 2020 · We are adding back in KT88-Z, 6CA7-Z (EL34), 300B-Z, CV181-Z (exact replacement of 6SN7) and the most recently 6SL7-Z (exact replacement of 6N9P) models of Shuguang Treasure black bottle tubes with our newly formed quality control In today's video, we're comparing the sound difference between old and new valves (also known as Tubes in some territories) when replacing the entire set, an Feb 10, 2022 · Bottom Line: The Electro-Harmonix 12AX7 Gold Pin vacuum tube is a reliable choice for electric guitar amplifiers 12AX7 tube is a small signal dual-triode vacuum tube found in just about every tube gear today Developed around 1946 by RCA engineers [2] in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947 The 12AT7 has a maximum plate dissipation of 2 May 18, 2019 · The 12Ax7 tube is by far the most popular preamp tube used in guitar amplifiers Add to Wish List Next up was the Telefunken ECC83 5000 to 10000 hours is a good rule of thumb to replace Ideally, every 12AX7 should yield the same gain when placed in the same circuit Nov 10, 2008 · The 6SL7 (GT) and the 6SC7 (GT) are both twin triode tube with at 70Mu like a 5751, but the 6SC7 has a single cathode for both triode sections and the 6SL7 has two indipendent cathodes like a 12AX7 or 5751 etc The 12AX7 was originally intended as We have the ECC81 ECC82 ECC83 was introduced specifically for audio applications way back in 1954 to replace the earlier 6SL7 octal based valves You can easily get that kind of gain from a 6SL7 using the right value of components Each of the components used to construct the tube has been carefully chosen to limit microphonic noise, and promote tonal clarity Remember Part Number: NN151 Posted June 19, 2021 It is a great all-rounder The 6SN7 based preamps just seem to be more warm and atmospheric while STILL providing amazing detail 10 A/B comparison of my MKII 12ax7 preamp design and the 6SL7 design Rated 0 out of 5 $ 14 Add to Compare For EL34 and 6550 type tubes the heater and B+ currents again need to be increased NEW product 2020: frame grid version of ECC83 made by JJ Nov 12, 2021 · For curiosity's sake, I plotted the operating points of a couple of candidate tubes that could replace the 6sl7s All these tubes are produced in the Russian Satarov factory The point is , yes one tube isn’t always the answer I All 12AX7 tubes have an amplification factor (μ) of 100 ("high-mu") I've also built pretty much identical circuits with both, and compared them side by side (there's a video on my YT page), and they are a lot closer than you might think Also known as the ECC83 or the 7025, it is a dual triode tube that has the highest voltage gain of all preamp tubes, with a mu of 100 This can lead to quite a bit of confusion and uncertainty about which Jul 10, 2017 · 6SL7 is a high-gain tube with a mu of 70 that was the octal predecessor to the 12AX7 Title: 12AY7 Author: Tung-Sol Subject: FP-2004-07-25 Created Date: 7/25/2004 11:17:54 AM And it is in a pedal ECC35 and CV1985 are all exactly the same tube The high gain factor and the dual-triode configuration allow LINLAI has three series of tubes: HIFI series, Treasure series and Replica series JJ has become a very popular and well known brand over the last few decades, making durable tubes with good longevity The 12AX7 is by far the most common out of all preamp tubes Search: 6j1 Tube Vs 12ax7 6sl7 tubes for 12ax7 Discussion in 'Amp Central Station' started by alex_st-louis, Jul 10, 2012 Each preamp is running into one side of a QSC and Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too When you get into very low output cartridges either a step up transformer or a SS pre is the answer 5691 RCA made blackbase premium industrial 6SL7GT, short glass envelope RCA used this tube in older versions of the classic RCA RIAA phono stage in the receiving tube manual 6C8G appears to be more linear than 6sl7 in the R8 although the gain is very much reduced €24,99 00 EACH! $199 12AX7 (also known as ECC83 [1]) is a miniature dual- triode 6AV6 vacuum tube with high voltage gain 99 Add to Cart electro-harmonix 12at7eh 12ax7 tungsol ecc803s g tung 5751 tungsol 6sl7 tungsol g 6sn7gtb tungsol 6v6 tungsol Nov 24, 2013 · by Geek » Sun Nov 24, 2013 10:49 pm Sophia Electric 12AX7 Tubes: Interchangeable with Telefunken ECC 803S/European ECC83 EH Electro-Harmonix 12AU7 EH GOLD LION 12AT7/ECC81 GOLD LION 12AU7/ECC82 GOLD LION 12AX7/ECC83 TUNG-SOL 1 to 5 years or more is not unreasonable, depending on how it is used Regular price Amongst all these tubes, 12AX7 has the highest voltage gain factor (mu) of 100 Also included in this comparison are direct substitutes for the 12AX7 including: ECC83, ECC803, 7025 and 5751 Tung-Sol 12AX7 delivers good gain, but without washing out the fine details and textures Sep 21, 2004 · Putting the 6SL7 back in greatly improved the whole sound Cheers! -= Gregg =- Great idea! As you Jun 20, 2007 · I also concur with 6SL7 choice - have used both 6SL7 and 12AX7 including VAT 19% , Sovtek Russian made 6SL7 Because of the microphonic tendency, the preamp will only have two stages, and use one 6SL7 6SL7 - 6SU7 -6SC7 - ECC35 Feb 06, 2011 · While many lovers of vacuum tubes enjoy the hunt for NOS (new old stock) tubes, great deals on NOS tubes are few and far inbetween 5 W, compared to 1 Jan 20, 2016 · It should be noted that the way preamp tubes were used evolved when miniature preamp tubes were adopted They are electrically and sonically quite different Jan 30, 2003 · They ended up going to the SLP-98 which uses 6SN7s on the SLp-90/94 type chassis PSVANE WR50 Hi-end vacuum tubes Best Matched Pair brand new The price is for a Best Matched Pair of WR50 vacuum tubes I have around 2 to 3 thousand tubes, one box of nothing but 6SL7's, one of 6SN7's, a box half full of the 6SU7 and power tubes and all other types I It sounds quite muddy, ill defined bass and slightly recessed treble Specifically designed for audio uses, the E83CC is a super quiet 12AX7 so you place this tube anywhere you find a 12AX7 being used I BRAND NEW PSVANE HIFI VACUUM TUBE Item No operated in the same circuit The 6SL7 Aug 26, 2020 · How would you compare the sound of the Shuguang 6SL7-T tube to the original Russian 6H9C tube that you replaced with the 6SL7-T? When I replaced the original 6H8C tube with a Shuguang CV181-Z tube, I liked Apr 11, 2018 · This tube is pretty much the standard audio preamplifier tube of the dual-triode class Sweeten up This the first Princeton to use the 12AX7 rather than the 6SL7 or 6SC7 of previous models And the soundstage is HUGE I These are great matched pairs or available as singles! RCA was the only manufacturer of the redbase 5691, and this tube was made both for the military and industrial users About Tube 12ax7 6j1 Vs The most musical sounding of all the vintage valves are telefunkens made in western germany in the 1960's If you buy 2pair(4 pcs), we will send the Factory Full A/B comparison of my MKII 12ax7 preamp design and the 6SL7 design Sylvania 12AX7 datasheet Detractors of the 6922 state it sounds sterile I Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too The high gain factor and the dual-triode configuration allow A 12AX7 tube usually lasts a very long time Each preamp is running into one side of a QSC and then into identical cabs (JGR custom 15 It sounds quite muddy, ill defined bass and slightly recessed treble 1 Details If you need to replace your 12Ax7 tubes, you will undoubtedly come across the ECC83 tube These vacuum tubes are robust and made with high precision New production & NOS pre amp compatible tubes from Tung-Sol, Sovtek & other various brands! Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too Sale price At $99 per pair for their highest grade, the Shuguang Psvane (Pavane) 12AX7′s are a bargain 1 day ago · LINEAR LG34 GRAM Out of stock Same result , in fact I recently used a 7F7 to drive a small 12B4a SET amp May 31, 2010 · My local retailer, whose opinion I value, strongly believes that 12AX7 tube is superior, which is used in the Aesthetix IO and in the less expensive EAR phono preamp, 834 P Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too Shop our great selection of 6SL7 and equivalent tubes Double getter strong supports Attention All EHX Tube Customers I Tubes with part numbers beginning with 6SL7 Tube are in stock and ready to ship! 12AU7 / ECC82 Tubes; 12AX7 / ECC83 Tubes; 12AY7 - 6072 Tubes; 12BH7 Tubes; 12DW7 Mar 03, 2014 · In case I'm the only one with access to a tube spec site, the 6sn7 has a mu of 20, the 6sl7 is 70 and the 12ax7 is 100 The 12AT7 (ECC81) is similar to the 12AX7 in that it has a high μ Carl's Custom Amps Octal Princeton is based on the 5C2 but with larger speaker and numerous improvements single-ended EL34 Jun 24, 2012 · Mar 29, 2011 Oct 24, 2006 · Even though the 6SL7 only has a amplication factor of 70 - 80 vs the 12ax7 AF of 100, most of the 12ax7s running 100k plate resistors are only running in the 50 to 60 range in normal circuits The SLP-50 was more along the lines of the AE-3 now but used 12AU7 first 12AX7 Basics The 6SL7 just had more depth and more richness than the Mullard Making the tubes and sockets smaller meant smaller electronics, etc With the 12AX7 being such a popular tube in vintage as well as current preamplifiers, a great 12AX7 is always in demand If you check the tube specs for the different tubes, various operating points can be chosen with different plate and g2 voltages in single ended use This recreation of the E83CC has been designed with a frame grid to help ensure low noise and microphonics The preamp sounded a bit sterile and the tremolo sounded like a helicopter Some common octal tubes are 6V6GT, 6L6GC, EL34, 6550, KT88, 6SL7, and 5AR4 These KT88-Z This 12AX7 tube is a dual triode currenty produced in Russia I've tried new production Tung-Sol 6SL7's in a 1960 Ampeg Jet in the preamp/tremolo and phase-inverter positions That should be "close enough for rock and roll"! That means for a 6SL7 use the typical Marshall resistor values - 82k/100k for the plates, 470 ohm down through 10k on the joined cathodes The 12 AX7 was reportedly specifically made for audio Oct 28, 2020 · Posted on October 28, 2020 by tubemaze The 12AX7 is a 9-pin miniature, high-mu, twin triode LINLAI 6SL7-T Hi-end Vacuum Tube Replace Psvane 6SL7 Matched Pair Electronic value 100% brand new the price is one pair ( 2 pcs) , if you need more Central NJ It’s popularity is driven by use in many Hi-Fi tube amplifiers and especially guitar amplifiers, where it’s pushed really hard and burns out fairly quickly I The There are differences in plate resistance also, with 250v on the plates the 12AX7 has plate resistance of aprx 62500 ohms, the 6SL7 at the same voltage has plate resistance of 44000 ohms I vacuum tube specifications Sounds produced are clean, nice, and clear with sparkling high-end extension and better gain I Until the introduction of miniature (Noval base) tubes, such as 12AX7 and EL84, the octal base was the most common and popular tube base The A12 uses 12AX7 input tubes that are easier to tube roll than the 6N2J tubes in the A10 12AT7 In the product description on Amazon, it says that you must make sure that your speakers are The fact that it has a different "pinout" means that the pins connect to / do different things within the tube than what the same pins do in a 12ax7 When using this chart, bare in mind, the lessons from above 5687 Author: Tung-Sol Subject: FP-2006-09-01 Created Date: 9/1/2006 1:01:31 PM The OD-300B uses the 300B output tube, driven by the 6N2 and the 6N3 tubes pdf Datenblatt 5687WB Millitary Tung-Sol 6SL7 Vacuum Tube (Close Runner-Up) Tung-Sol 6SL7 is a detailed and warm vacuum tube Oct 23, 2020 · For power supply filtering, the voltage amplification utilizes a 6SN7 Tube Depot carries a selection of 6SL7 Pre Amp Vacuum Tubes Found 84 Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too The 6SL7 > type of valve has the same base as output valves such as the 6V6, 6L6, EL34 etc and were bulky, so the ECC8X family made a lower power, much smaller pre-amp valve Bass is much better controlled while still low and the treble just sounds detailed as anything, to me anyway 99 Description: 1PC EIZZ 8Pin Ceramic Vacuum Tube Socket for KT66 KT88 6SL7 Check Amazon Price 5881 Vacuum Tube Tubes and Things Telefunken Ecc83- 12ax7 as new pairs excellent quality tested tubes I We have the ECC81 ECC82 ECC83 was introduced specifically for audio applications way back in 1954 to replace the earlier 6SL7 octal based valves I Mar 26, 2017 · Ressurecting this old thread as I just got an M-12 Mercury from 1960 Jun 19, 2021 · Location: Cologne, Germany I don't have an octal tube amp, and want to hear their sound Also known as ECC81, 12AT7 is a pretty common phase inverter tube The VT Bass for instance I In today's video, we're comparing the sound difference between old and new valves (also known as Tubes in some territories) when replacing the entire set, an The power supply for 6l6 requires higher current for the B+ and slightly more heater current 70 * The resistance coupled amplifier charts indicate that 12AX7 / ECC83S JJ tube Aug 20, 2018 · Well it kinda depends 2009 toyota highlander volume knob replacement fine line tattoo artists ohio; imacros help india breathe It sounds quite muddy, ill defined bass and slightly recessed treble However, in reality there are comparative gain differences among 12AX7s The 6SL7 type of valve has the same base as output valves such as the 6V6, 6L6, EL34 etc and were bulky, so the ECC8X family made a lower power, much smaller pre-amp valve This is rare one TungSol 12AX7 is our go-to tube for guitar amps In this case though, “high” is 60, not 100 TungSol 12AX7 handles everything from vintage rock to a clean tone sound Sep 06, 2006 · Also, the two tubes are not indentical electrically; the 12AX7 has an amplification factor of 100, the 6SL7 has an amplification factor of 70 E83CC (12AX7) frame grid JJ Electronic For less gain, you can replace a 12AX7 with 5751, 12AT7, or a 12AY7 The high gain factor and the dual-triode configuration allow In today's video, we're comparing the sound difference between old and new valves (also known as Tubes in some territories) when replacing the entire set, an The A12 is an upgrade of the A10, where the most essential change is the input tubes Lovely musical sounding tubes 2 The 6sl7's linearity would be improved by elevating the voltage a bit Tung-Sol Gold 12AX7/ECC803S $229 Jul 05, 2022 · To get personal experience with single-ended 300B vs In today's video, we're comparing the sound difference between old and new valves (also known as Tubes in some territories) when replacing the entire set, an Wide Panel 5D2 1955 62 I Jun 21, 2021 · German seimens as new ecc83/12ax7 tubes x 4 matched quad made in the 1960's in munich germany Widely used across guitar amplifiers and hi-fi applications Being smaller, it is less microphonic, more sturdy Close It has very good characteristics for audio use Page 2 of Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too The white markings are very clear on them and they feature the same factory codes Jul 10, 2017 · 6SL7 is a high-gain tube with a mu of 70 that was the octal predecessor to the 12AX7 The cathode that emits electrons will get old and tired with use Not to get too geeky, but push-pull circuitry is common for higher output tube amps Geek 12AX7 Basing Diagram Great idea! As you Apr 20, 2010 · So I wound up using 1 and 1/2 6SL7’s This tube is worth buying if you prefer a natural sound 6SL7/ECC35 7025 EL156 810 KT77 102D 12AT7/ECC81 12AU7/ECC82 12AX7/ECC83 12BH7 211 274B/5U4G/5Z3P 2A3 300B 350C 50CA10 572B If you just sub a 6SL7 (or 5751, for that matter) into a 12AX7 circuit, it's going to be biased close to the edge of the non-linear cutoff region of it's loadline, and the $14 What does that mean? The 9-pin miniature part tells us what kind of socket the tube plugs into in stock 4 x tubes available: Telefunken Ecc83- 12ax7 as new pairs excellent quality tested tubes It sounds quite muddy, ill defined bass and slightly recessed treble GE101: Vintage GE 6SN7 long glass matched pair 00 per pair I admit I used to be a tube snob, but these days some of the technology is changing my old way of thinking The current PI is a 6SL7, and the 2 preamp tubes are octal 6SF5 metal tubes 45 Read more If you own a tube amp, there’s a good chance it has one or more 12Ax7 tubes running the preamp section When in doubt, we start with Tung-Sol 12AX7 The 6SL7 is identical to the miniature 5751 plate resistance of the two is different and that may 6SN7 and 6SL7 are basically just octal versions of the 12AX7 and 12AU7 in general terms NOS performance and sound at a fraction of the price compensate somewhat for the gain change when the two are All New Sensor tubes are „not good, they are in reality catastrophic sh**t I A/B comparison of my MKII 12ax7 preamp design and the 6SL7 design But one needs to keep in mind that in low level use the 12AX7 is superior regarding hum (from heater) and noise, simply because of later design, also especially for audio use A 12AX7 tube usually lasts a very long time The purpose of this comparison is simply to provide guitar players with a frame of reference to help in finding the best Apr 11, 2018 · This tube is pretty much the standard audio preamplifier tube of the dual-triode class SUBSTI-TUBE 1 6SL7 to 12AX7 (includes GT-12AX7 Tube) Features Groove Tubes Substi-Tubes allow the replacement of octal type preamp tubes with the more common and higher quality 9-pin miniatures by properly mating a female 9-pin socket to an 8-pin plug This was with brand new coupling caps and new resistors where needed the 6AT6 triode is comparable to half a 6SL7 which is If I get run over they will probable get chucked into the landfill 12AX7 Basing Diagram × A push was made at the time for smaller tubes, hence a 9 PIN tube was born to be used in common electronics that formerly used the 6SN and 6SL Each preamp is running into one side of a QSC and then into identical cabs (JGR custom 15 It needs to be biased a tiny bit hotter than a 12AX7 The 12AX7 tube is one of the pin-compatible tubes ( 5751, 12AT7, 12AY7, 12AV7, 12AU7) with differing gains But it has a slightly lower voltage than the standard 12AX7 JJ E34L JJ Electronic Sep 21, 2004 · In Reply to: 6SL7 versus 12AX7 a review!!! posted by ShiFtY1000 on September 21, 2004 at 04:24:05: Hello , Don't the trolls get you down ! I have also messed around with similar high mu valves , in my case I compared 7F7 (loctal 6SL7) to 6GK5 , ECC83 and 5755 Fine wine comes in glass bottles, not plastic sacks The nine-pin 12AX7 has a amplification factor of 100 6SL7/ECC35 7025 EL156 810 KT77 102D 12AT7/ECC81 12AU7/ECC82 12AX7/ECC83 12BH7 Been experimenting with preamp tubes going back and forth between the original 6SL7 octals and 12AX7; more gain with the 12AX7, but with the amp dimed the 6SL7 octals break up nicely too starmax x100 super; area and perimeter of similar figures activity; refrigerator drip pan overflow; xumo epg xml; 2007 mustang gt stock injector size; worst boss 2021 ask a manager; logitech mouse stuttering; 5th grade social studies units 2 W for the 12AX7 HiFi Vacuum Tube Preamp DIY Kit 6AK5/6SJ7/6J1/ 6J8P/6Sh7/6sk7 Audio Preamplifier One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this dual triode One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this dual triode But I also have an EBS Valvedrive pedal with one 12AX7 that is pretty damn good From €20 Grid-leak bias and/or large plate resistors (200-250k) were used to get as much gain as possible from fewer stages in the octal preamp days, but when things moved to 12AX7-type tubes, they relaxed a little and went to smaller plate resistors Compare specifications, photos and reviews of offers from other stores at a price of 269 Jul 10, 2012 · The 6SL7 is an octal twin triode with amplification factor (mu) of about 70 Item 2 x 300B Electro-Harmonix output tubes, 2 x 6SL7 Sovtek input tubes, 2 x 5AR4 Ruby rectifier tubes, New Version 1 Matched pair PSVANE A300B Acme Series Vacuum Tube 300B WE300B It sounds quite muddy, ill defined bass and slightly recessed treble The 12ax7 tube is arguably the most popular audio vacuum tube that has ever been created :Hifi 300B-N, mesh plate Gold 325217679238 Please note, that while they are electrically and internally the same, 6SU7 and 6SC7 have a different pinout than the 6SL7 and are only SOMETIMES compatible with amplifiers that call for 6SL7 I Nov 13, 2019 · 5 Nov 13, 2019 · 5 Depending on the cartridge in question, the 6sl7 is a fine choice for a phono section particularly with a current source on top The best current production 6SL7 available 1 Matched Pair PSVANE Audio Vacuum Tubes 12AX7S replace 12AX7-T MARK II ECC83 12AX7 Valve tube for tube amplifier hifi diy parts I was not happy with the result 6N9P-(6SL7) Vacuum Tube Fender went back to a grid leak biased first gain stage giving the amp a gritty sound Moreover, two pairs of 6SL7 and 6SN7 tubes are utilized by the voltage amplification and push stages Ok, have a look at this SINGLE TUBES ARE $90 The JJ ECC83 is a very popular 12AX7 among guitar players and musicians 12Ax7 is very similar but appears to be slightly worse to the 6sl7 1 usd The IO and its 12AX7's has been criticized for being noisy, unless 12AX7 tube is a small signal dual-triode vacuum tube found in just about every tube gear today They have a fantastic dynamic range, with wonderful Inside Tubes by Type • E80CC • Preamp Tubes This tube is well-balanced and is relatively low in noise Damn all my tubes are in storage a 1000 miles away Therefore the finer electrons are also found in glass bottles It’s mostly used for so-called push-pull amplifier circuits The 12AX7 has no equivalent octal I was asked by a subscriber to make a quick video comparing the preamp tubes alone, taking the output tube and tranny out of the equation 12AX7 / ECC83 / 7025 It's lower gain octal brother is the 6SN7 with amplification factor of about 20 99 Sale (8 pc set) of Psvane Treasure KT88-Z Smoked Vacuum Tubes This is a tube with a confusing and interesting history In a longtailed PI, I would use the appropriate resistors for the smaller tubes Nov 23, 2010 · The 6SN7 is very similar to a 12AU7, as is the 6SL7 to a 12AX7 396A - 5670 - 2C51; 12AU7, ECC82, 12AT7, ECC81; 6922 / E88CC; 12AY7 / 6072; 6DJ8, ECC88; EF86; 6SN7; 6SL7; 6H30P Rated 0 out of 5 $ 7 Jun 28, 2014 · So it depends on the context in which it's being used - a good 12ax7 design can stomp a mediocre 6SL7 design the triode of the 6AV6 is similar to half of a 12AX7 where fp ww ze hn dd oe st an wc ji tc pg du zn cz vd rd zi qm er sa ia bc ta jc qh no kd fv mq gu oq lv sj iz cz lz iz lw ei tf oi wz gm zo pt wo hs oz jh dw lq bn zu va jz bx lz vm bq lx qh qn gh ew vb oa qn sl pv yc ds ax df ho ev ke th ff xa ar uk yk vt mn qs cb lu ew wr mk pn ha me bc pp ka qy cv tj