6ak5 guitar amp. 6. Fender Blues Junior Lacquered Tweed (Best for Small Venues) "The best grab-and-go vintage tube combo amp for studio sessions and bluesy pub gigs.". The Blues Jr Lacquered Tweed is a 15W tube guitar amp with a 12″ Jensen C12-N speaker, a solid-state rectifier, a trio of 12AX7 preamp tubes, and two EL84 power tubes.

Feature： These vintage, 1980s - military specification - General Electric valves are a perfect upgrade,JAN GE5654W Vacuum Tubes is a great upgrade for Little Dot and Little Bear amps! This tube is a direct replacement for 7-Pin 6J1 / 6J1P / 6J1P-EB / 6Zh1P-EV / 6AK5 / 6AK5W / EF95 tubes. 5654W Vacuum Tubes is very high quality …

Part 2 and the final chapter of the GR test equipment re-purpose to a tube guitar amp. Man did this one turn out great! Tony C had nothing bad to say about i...In the example he uses an EF86, which is a 9 pin pentode more frequently found in guitar amps than the 6AU6 which is more of a phono / radio tube. But they both have the same basic elements and there is a lot of good info there for you. Here is an example in action, with Mark Lavelle's Decimator. Check out how he sets up the 6AU6,

50C5 Single Ended Triode Amplifier. My first home-made tube project. Uses all "AA5" (All-American Five, refers to the dime-a-dozen line operated table radio tube lineup) tubes, in this case a type 35W4 rectifier, 50C5 output, and a 14GT8 or 12AX7 for the driver. Due to popular opinion, I'm putting in some of these cute triangular symbols...SE 6AQ5 stereo amp. 05-15-2015, 07:24 PM. Hey everyone, first post to the forum! I cannabalized a defunct Sony TC-500a tube reel to reel. It has a matching pair of HUGE 5K OT's, a solid PT and all the tubes to compliment. I have loads of experience with building guitar tube amps so i was thinking a small desktop tube amp would be a fun project.To simplify, there is a relationship between the triode in question (6AK5-triode), the value of Rp (82k in this circuit) and the value of Rk (2k ohms in this circuit). You can get a feel for this by playing with …2015-11-29 4:43 am. #1. hi everyone looking in,....i'm in search of answers .....I have built a handful of amps,an 18 tmb,a 36tmb, a howler monkey, an angella,dual single ended with 6aq5's (dropped plate and grid volts to suit), and am now working on a howler monkey again,but with 4 6aq5's in the output. The Howler Monkey Push Pull 6AQ5 Guitar ...6AQ5 amp project. 10-03-2018, 10:00 AM. Hi everybody, I have some parts laying around and have been thinking of building a guitar amp based on 6AQ5 power tubes. The output transformer is a Stancor A-3852 which is rated at 40 DCmA / 18W. I am wondering if this output transformer would be suitable for a power amp with 4x 6AQ5 tubes.6AQ5 SE amp build from Ampro parts. Hi All. I am converting an old Ampro reel-to-reel into an SE guitar amp. The tape mechanisms were all rusted to hell and non-functioning, but the basic amp seems nicely intact, as is the wee cabinet that I'll re-use to house the amp. My question concerns possible schematics to follow during my rebuild.2010-11-26 12:28 pm. #5. The 6AK5 was designed for low noise amplification of low-level VHF/UHF signals. Audio distortion was not a consideration. Triode connection will help, but I would not use it for a line stage without cathode degeneration. In fact, I would not use it for a line stage at all.A cathode or source follower presents these high impedance voltage amp VTs with friendlier loads (Hi-Z, Lo-C). *) Extremely poor power supply. A 100R resistor and a 47uF capacitor has a cutoff of: 33.9Hz. ... or a guitar amp, but that's about it. I give this design a rating of: An externally hosted image should be here but it was not working ...I'm basically working on a champ clone, but using a 6aq5 tube rather than a 6v6. I've selected a Hammond 261C6 power transformer which puts out 250V C.T @ 45ma. I'm using diode rectification for a B+ voltage of around 180V. Following the 6aq5 datasheet I was hoping for around 2watts total at this voltage. My issue is the cathode bias resistor.

6AK5: The 6AK5 was another western designation with brands including Tung-Sol, Siemens, National, and Ericcson: 6AK5W: An improved 6AK5 with typical brands including Raytheon, Mullard, and Telefunken: …Guitarist. Best high-end guitar amps 2024: 8 of the finest-sounding amplifiers money can buy. By Simon Fellows. ( Guitarist, Total Guitar ) published 18 February 2022. From handwired boutique combos to high-gain monster heads, we invite you to peruse these dream guitar amps from Fender, Marshall, Mesa/Boogie and more.The Howler Monkey Push Pull 6AQ5 Guitar Amp - Amplifier_Circuit. 6n6p push pull Hunting a 6l6 push pull amp schematic Lab push pull simulation. 6u9 6aq5. 6l6 push pull schematic amp amplifier hunting tubes audio octal intriguing quite also6as7 6080 audio dissident Push pull 6as76s19p push pull class a circuit i've got going right now. only 6w ...

Mikael Abdellah KT88 Single-Ended Tube Amplifier Schematic. Output power will be about 5W. The 470 ohm cathode resistor sets bias at a 75mA which is only about 68% of the maximum plate dissipation so expect long tube life with this amp. Choose a good quality audio output transformer with a 5k primary and rated for at least 10W. With various ...

Mar 12, 2010. #2. Yes it will work as an audio amplifier, about 2 watts of audio out. It needs 6.3V for the filaments and about 250V for the plate. It will also require a output step down transformer to match the output impedance to the impedance of a speaker. The great thing about electronics is unlimited ways to do the job.

SE 6AQ5 stereo amp. 05-15-2015, 07:24 PM. Hey everyone, first post to the forum! I cannabalized a defunct Sony TC-500a tube reel to reel. It has a matching pair of HUGE 5K OT's, a solid PT and all the tubes to compliment. I have loads of experience with building guitar tube amps so i was thinking a small desktop tube amp would be a fun project.6005W JAN/GE aka 6AQ5A / 6AQ5W / EL90 / 6HG5 / 6669 / CV4019 NOS-NIB Pentode. the 6005W is the Super-6AQ5 made by General Electric for JAN=Joint Army-Navy. he W marking at the end of the type number refers to the particularly robust design in accordance with military requirements. 6AQ5 were used in the Fender Musicmaster Bass Amp and in the ...Buy Tube Amplifier Kit, 6J1 Tube Preamplifier Vacuum Tube Amplifier, 2.0 / Stereo Tube Amp Kit with 5.5x2.5 Power Interface Plug, ... I used it as a boost pedal for a guitar amp. It starts to distort on a single channel with about 1.6V peak-peak input, and at 2.5V p-p it starts to clip due to plate cutoff which gives the sound more crunch. ...A custom build of a valve amplifier using two 6AK5/EF95 valves, 4S battery pack with protection, charging module and battery level indicator ... It started out as a simple mains operated amp, I then decided to make it battery operated, this became a bit complicated as I had to come up with a 12v to 100v DC boost convertor, a 4S protection board ...Amplificador completo - Guitar Amplifiers - Pereira, Risaralda ... ... Marketplace

Here's how it works. Best tube amps 2024: unlock incredible tone with our pick of the greatest tube amps you can buy right now. There isn't anything quite like a real tube amp. Bathe in warm, organic tones with our pick of tube amps from Fender, Mesa/Boogie, Vox, Tone King, Orange, Supro and more. 1.Built on the original chassis, maintaining as much of the original parts possible. 5 Tube Line-up: Sylvania pair 6AQ5's, 6AV6 (inverter), 12AX7 (preamp) The amplifier is hand built utilizing a D-Lab ECBA driver board. Output transformer is a Hammond 125H. 4 or 8 ohm speaker output. It sounds out of this world!A (4) piece lot of audio - amplifier - HAM - radio - TV tubes, type 6AK5. The tubes are n. o. s. in the boxes, various branding. Tubes test good on the Heath IT-17 tube tester. While you're here, please have a look at my other listings! Payment: Pay-Pal is preferred. I will accept a check from USA . Kindly make your payment within 4 business days.Check out our 6ak5 vacuum tubes selection for the very best in unique or custom, handmade pieces from our stereos & home audio shops. Etsy. Search for items or shops ... (Steampunk TV Ham Radio Guitar Amp) (226) $ 28.95. FREE shipping Add to Favorites 10pcs 6J1P-EV / 6J1 / 6ZH1P-EV/ EF95 / 6AK5 6J1 Pentode Voskhod factory tubes / valves otk NOS ...Push-Pull (PP) EL84 (6BQ5) or 6V6 (6AQ5) Tube Amp Schematic with Dynaco A-410 Transformers. The power supply uses a 5Y3 tube rectifier and a C-R-C filter. More information about tube power suppies is available in the Power Supply Design for Vacuum Tube Amplifiers article. For an application of this push-pull tube amplifier schematic using 6SL7 ...While known as the 6J1 in China and Russia, in the west this tube is more commonly known as the 6AK5 or 5654, and also as the EF95 in Europe. ... Audio use has generally been in guitar effects pedals, microphones, pre-amps, and headphone amplifiers as it has a lower output than needed for larger wattage applications.Demonstration of the new D-Lab 3C amplifier. Features a 2 watt tube system, 3 tubes: 6X4, 6AV6 and 6AQ5. Custom Point to point wired chassis. Real nice tone....Whether you’re welding or working in a power plant, the ability to calculate three-phase power can prove handy. Read on to learn more about converting three-phase power to amps. An...The OPT is a modified 70V line matching transformer. An air gap was added. It sounds better than the unmodified one. Since the inductance is lower with the a...Best Sellers in Guitar Amplifier Tubes #1. JJ 12AX7 / ECC83 Preamp Vacuum Tubes (Three Pack) ... Matched Pair JAN 5654W Vacuum Tubes 7Pin Upgrade for 6AK5 / 6J1 / 6J1P / EF95 AMPTATA Audio Fully-Tested Platinum Grade Version. 4.5 out of 5 stars ...I disassembled it, the most components were transformers with a restricted bandwidth, so I think not reusable for guitar amps there were 3 x 5654 tubes and 1 x 6AK5 tube (near the same tube I've read)AMP Robotics, a company developing AI-powered robots that sort recyclable materials, has raised $91 million in a corporate equity round. AMP Robotics, a Denver, Colorado-based star...The higher value on Va will demand a more negative Vg than design center spec, which is Vg=-12.5, Va=250. BTW, except for PaMax, the 6AQ5 and 6V6 are like identical cousins. 6V6 PaMax=315, 6AQ5=275. That seems to be the "rub" here. I've got a PP 6AQ5 Gibson Scout where Va=305 or so.D-Lab's Sparton Radio 4 watt 6AQ5 tube headTheme amp, only 1 will be built, very compact design1960's Sparton radio Wood Cabinet, Original finish 6AQ5 output tube, (NOS Amperex) running Class ABuilt on a Bud 9.5" aluminum chassisOutput tranny with 4+8 Ohm external jacksBack lighting thru a...The Howler Monkey Push Pull 6AQ5 Guitar Amp (C) 2012-2022, G. Forrest Cook Introduction. This spiffy little amplifier uses a push-pull design featuring a pair of 6AQ5 beam power tubes driven by a 6J6 dual triode phase inverter, all of which are 7 pin miniature tubes. It is the amp that I designed after my popular Squirrel Monkey one-tube amp ...6aq5 tubes in a guitar amp. Thread starter pucho812; Start date Jul 30, 2013; ... Location third stone from the sun. Jul 30, 2013 #1 here is a little layout for an amp using 6aq5 tubes 8) Attachments. 5E3_Layout_with_6AQ5_Power_tubes.GIF. 144.7 KB · Views: 24 Reply. Post reply Insert quotes… Similar threads. M. Magnatone tube amp ...Add to Cart. Vintage Music Man 212 Sixty-Five 2-Channel 65 Watt 2x12" Guitar Combo Amp 1974 - 1979 - Black. Used - Very Good. East Brunswick, NJ, United States. $895. $895. Add to Cart. 1974 Fender Champ chassis w/ original RCA tubes - serviced Silverface 6w tube amp. Used - Very Good.WARNING: A tube amplifier chassis contains lethal high voltage even when unplugged--sometimes over 700 volts AC and 500 volts DC.If you have not been trained to work with high voltage then have an amp technician service your amp. Never touch the amplifier chassis with one hand while probing with the other hand because a lethal shock can run …

Types never seen in guitar amps. The G-1000 consists of two totally independent amplifiers, with very different preamp sections. One channel is called the HAPPY channel. The other is called the ANGRY channel. For damn good reason. One sucks your face, the other gnaws your foreskin off. The HAPPY channel is a more-or-less conventional instrument ...6AS6 are tiny dual control RF pentodes, with very compressed output unless you put around +8V to +10V on grid 3 with respect to cathode. I thought you mentioned 6AQ5 tubes as available. Use the 6AS6 tubes for fishing bobbers. Even sub-mini wire leaded tubes can leave 6AS6 in the dust. Last edited: 2020-02-10 2:45 am.I've been meaning to build an amp around them for years but haven't gotten to it. EL90 is the Euro-designation. If the Bambino sounds the way you want, I wouldn't hesitate just because it uses a NOS power tube. Buy up a bunch; the 6AQ5 is really a cheap, good NOS tube, maybe the last like that that is useful for guitar.Mikael Abdellah KT88 Single-Ended Tube Amplifier Schematic. Output power will be about 5W. The 470 ohm cathode resistor sets bias at a 75mA which is only about 68% of the maximum plate dissipation so expect long tube life with this amp. Choose a good quality audio output transformer with a 5k primary and rated for at least 10W. With various ...The Howler Monkey Push Pull 6AQ5 Guitar Amp (C) 2012-2022, G. Forrest Cook Introduction. This spiffy little amplifier uses a push-pull design featuring a pair of 6AQ5 beam power tubes driven by a 6J6 dual triode phase inverter, all of which are 7 pin miniature tubes. It is the amp that I designed after my popular Squirrel Monkey one-tube amp ...The 6AK5 pentode operates in much the same way as an EF86 in vintage Vox amps to produce that characteristic chime. ... The datasheet spec of 7 or 9W value can I think be exceeded quite a bit when the 6gv8 is used in a guitar amp. The 6gv8 like a 6cm5 will work fine in guitar amp application with plate dissipation higher than the datasheet ...6v6 single-ended tube stereo integrated amplifier (hand-built) photoSingle 6v6 ended amp triode audio circuit 6v6 reverbWhat are the best 6v6 tube amps? – music gear zone. Single-ended 6v6 amplifier photo #432234Single-ended 6v6 amplifier photo #1354379 Single-ended 6v6 amplifier photo #13543796v6 amplifier single ended. …

If you’re running multiple appliances simultaneously, then it's possible that your circuit could overload. Although the National Electric Code (NEC) does Expert Advice On Improving...Risaralda is highlighted by yellow color. blank 4. Simple black and white outline map indicates the overall shape of the regions. physical 4. Physical map illustrates the natural geographic features of an area, such as the mountains and valleys. political 4. Political map illustrates how people have divided up the world into countries and ...Because you have a 100k Ohm cathode/suppressor resistor to ground, any AC filament to cathode leakage Will Add Noise to this circuit. Also, you have a 470k Ohm g1 resistor to ground, the 6AK5 maximum resistor specification is 100k Ohm. Once you have B+ and a plate/screen load resistor, you are going to need a coupling cap from the plate/screen ...6AK5. The EF95/6AK5 is an amplifier pentode that is physically small and the electrode assembly is no more than a 10 mm cube. The use of this device lay in low noise RF …Jun 8, 2011 · Here's my offer: Design and assemble a tube low-power guitar amp (2.5 - 5 watts) for $100 or less. No speaker or cabinet, but a complete amplifier which can be plugged into the wall and produce a suitable output from a guitar plugged into its input jack. Save your receipts.Push-Pull (PP) EL84 (6BQ5) or 6V6 (6AQ5) Tube Amp Schematic with Dynaco A-410 Transformers. The power supply uses a 5Y3 tube rectifier and a C-R-C filter. More information about tube power suppies is available in the Power Supply Design for Vacuum Tube Amplifiers article. For an application of this push-pull tube amplifier …Some amp basics are in order first. A guitar amp can be thought of as a device that has two stages. A relatively weak signal goes from your instrument into the first stage, where it is processed and handed to the second stage, which boosts it into a strong signal-the sound that then comes out of the speakers and rocks the Casbah.The unit was about AU$200 which was expensive in my eyes. But a few years later, I spotted the DIY More kit which seemed to do the same thing, sold on eBay as a 6J1 tube-based pre-amp kit, a clone of the "fever" design which is very popular. The whole kit cost just AU$8.87 including the tubes, which I thought was a bargain, so I promptly ...The 6AQ5 is an output tube which is essentially a 6v6 in a small bottle. I wanted to build something closer to a 5e3 Tweed Deluxe, but I was advised that even though the power transformer is large, it likely wasn't designed to handle 15 watts continuously, so I went for a much smaller 3 amp goal akin to the 5f1 Champ.There are two designs that dominate guitar amps. One is the “Cathodyne”, also known as the “Split-Load” (Fig. 1), and the other is the “Long-Tailed Pair”, derived from a circuit called the Schmitt Inverter (Fig. 2). The Split-Load is the simplest arrangement. It splits the signal by virtue of the fact that the signal appearing at ...2015-11-29 4:43 am. #1. hi everyone looking in,....i'm in search of answers .....I have built a handful of amps,an 18 tmb,a 36tmb, a howler monkey, an angella,dual single ended with 6aq5's (dropped plate and grid volts to suit), and am now working on a howler monkey again,but with 4 6aq5's in the output. The Howler Monkey Push Pull 6AQ5 Guitar ...Pre-amp tubes 6AK5W=5654 Pentode GE 5654W 6AK5 6J1 EF95. GE 5654W 6AK5 6J1 EF95. SKU: 88-1402 Category: 6AK5W=5654 Pentode Tag: Pre-Amp Brands: GE. $ 9.99. Share: ... All NOS tubes types for home audio and guitar amplifiers. $50 minimum product order * 30 Day Rock Solid Warranty on ALL NOS Tubes!Back to the Phase Inverter. There are two designs that dominate guitar amps. One is the “Cathodyne”, also known as the “Split-Load” (Fig. 1), and the other is the “Long-Tailed Pair”, derived from a circuit called the Schmitt Inverter (Fig. 2). The Split-Load is the simplest arrangement.Part 2 and the final chapter of the GR test equipment re-purpose to a tube guitar amp. Man did this one turn out great! Tony C had nothing bad to say about i...plate. I wired it for 6GK6, which is a tube nearly identical to EL84, but. different pin out. It makes a good sub and can be had for a very good. price. I've got a [professionally} matched pair of NOS Sylvania black plate. that promise to be very nice tubes. The question concerns wiring for g3, indicated as pin 3 in Duncan's TDSL. It appears I ...The push-pull circuit of 6p16aq5 push pull howler amp guitar monkey circuit amplifier diagram seekic 6j6 power ic The push-pull circuit of 6p1Lab push pull simulation. 12at7 amplifier circuit push pull tube schematic 15watt p0wer explanationA proposed push-pull 6c45 spud amp Push-pull class a with one output tube?El84 pp2.A (4) piece lot of audio - guitar - amplifier - HAM - radio - TV tubes, type 6AK5 .The tubes are n. o. s. in the boxes , various brands.Tubes test good on the Heath IT-17 tube tester.While you're herePRNDL said: I'm having problems with my 6AK6 push-pull guitar amp, which now has a scratchy sound at high volumes. I've gone through everything and it appears to be the output tubes. The amp has a B+ of 290 volts, which puts about 250 volts to the anodes of the output tubes and slightly less to the screens. Several people mentioned that 6AK6's ...If you’re a musician or music enthusiast looking for high-quality musical instruments and equipment, GuitarCenter.com is a go-to destination. With a vast selection of guitars, drum...

That point is now, as the amplifier works and has now been safety tested. It uses a 6AU6 in the preamp, and the 5763 in the power amp (the tube I have is actually an 5763-equivalent Philips QE03/10). Here is the schematic: I used a baking tray for the chassis, which was quite effective. This is my first tube amplifier build.

A thought: Several people have mentioned that the 6AQ5 is functionally a 6V6 in a. smaller envelope. Someone else I know, an amp technician, says that the 6AQ5 is a. television tube and that it's far too linear in response to be a good, musical guitar tube. He also says that the 6V6 is a wonderful tube-- so. he loves that 6V6, hates the 6AQ5.

D-Lab 6V6 Champ circuit guitar tube amp in a RCA wood cabinet. The cabinet is an old RCA 50's era. Cabinets finish is original. This is a very special cabinet, featuring butterfly pattern veneer. If you are seeking a unique sound with lots of Mojo, Here it is! A very quiet/responsive amp. Perfect for recording and will look super in your studio.The Squirrel Monkey amp is essentially a "Champ in a bottle" with a number of differences from the original Fender design. The Squirrel Monkey is a simple design with only two controls, volume and tone (high-cut). The amp produces around 0.8W of audio power, that is loud enough to work as a practice amp or a recording amp.Now basically its just guitar amps and a couple of hifi amps where tubes are used. So there are no longer many manufacturers or retailers. And the tubes you're looking for aren't commonly used audio tubes. Like the 5654W, which is a version of the 6AK5, is a 7-pin pentode that was used in very high frequency devices like radar systems in the 1940s.A thought: Several people have mentioned that the 6AQ5 is functionally a 6V6 in a. smaller envelope. Someone else I know, an amp technician, says that the 6AQ5 is a. television tube and that it's far too linear in response to be a good, musical guitar tube. He also says that the 6V6 is a wonderful tube-- so. he loves that 6V6, hates the 6AQ5.Demo of my latest D-lab amp solid state to tube combo amp creation. This amp utilizes my Opti-plex circuit. Sweeping from a Marshall to Fender Champ to Delux...The 6AQ5 output tubes are described in the RCA receiving tube manual as being lower voltage versions of the larger 6V6 beam power pentodes. The maximum undistorted power output from this amplifier is about 5 watts, which is plenty loud for a practice amp. The amp can drive an 8", 10" or 12" guitar speaker.D-Lab/Zenith Model M-7, 6AQ5 guitar tube amp. I was challenged to build an all 7 pin miniature tube amp. So here it is! Super sound. Design is close to a Fender Champ circuit. No tone controls, however it does incorporate my famous (Opti-plex) which allows pre-amp tube tone rolloff at different frequencies. 4 tubes: 2- 6AV6, 6AQ5, 6X4.Selling a vintage Webster single ended tube amp project. Ready for conversion into a guitar amp. 6au6 preamp, 6aq5 (el90) power tube, 6x4 rectifier - compact in size, made in Chicago during the golden era of vacuum tube circuitry. TONS of potential, these make KILLER harmonica or guitar amplifiers. Used, so has blemishes, but overall a nice project, as pictured, ready for you to finish.

welbypercent27s car careblazer macylowepercent27s kanawha city west virginiasks th 6ak5 guitar amp newyork presbyterian westchester behavioral health center [email protected] & Mobile Support 1-888-750-7481 Domestic Sales 1-800-221-7346 International Sales 1-800-241-6147 Packages 1-800-800-4197 Representatives 1-800-323-3971 Assistance 1-404-209-7909. Need tubes for your audio gear or guitar amp? Need tubes for that antique radio or boatanchor you are restoring? You have come to the right place! ... EF95 6AK5 5654 403B: Little Dot Headphone Amp Tube : Pentode : Tung-Sol, Western Electric, Raytheon, Hytron, RCA, GE 5 Star : VT-229 6SL7GT : Pre-Amp Tube : Dual Triode :. kortnie opercent27connor 6AQ5 / 6HG5 / 6005. Availability: Usually ships within 24 hours. Replaces 6AQ5, 6HG5, 6005, 6095, and 6669 tube types. Assorted 6AQ5 brands in stock. Purchase 6AQ5 / 6HG5 / 6005 vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier.The 6AK5 vacuum tube is a miniature 7-pin sharp-cutoff pentode used as RF or IF amplifier especially in high-frequency wide-band applications at frequencies up to 400 MHz . It was developed by Bell Labs / Western Electric and used extensively as an I.F. amplifier in World War II radar systems. The tube is notable for its extremely fine grid ... qnwat sks tljramwhat time does bi mart close today 2pcs 6J1P 6AK5 Valve Vacuum Tube For PreAmplifier Board Headphone Amplifier. Shipping, arrives in 3+ days. JJ Electronics 6L6GC Power Vacuum Tube Single. Add. $38.99. ... 2 pcs Vacuum Tube Guitar Pre-Amp Vacuum Tube, Guitar Tubes, Audio Tubes, Great , Stereo. Shipping, arrives in 3+ days. mishi blyaherapwrn ba zyr nwys farsy New Customers Can Take an Extra 30% off. There are a wide variety of options. 2pcs 6J1P 6AK5 Valve Vacuum Tube For PreAmplifier Board Headphone Amplifier. Add. $12.19. ... 2 pcs Vacuum Tube Guitar Pre-Amp Vacuum Tube, Guitar Tubes, Audio Tubes, Great , Stereo. Shipping, arrives in 3+ days. 2pcs 6J1P 6AK5 Valve Vacuum Tube For PreAmplifier Board Headphone Amplifier. Add.For instance, most guitar amps use 'undersized' output transformers, often with lower impedance primaries than in hi-fi apps, to get the tubey sound. Common SE guitar amp OT impedances Also, the volume/power level you need/want makes a difference- Do you want to be able to play the amp wide-open at 'bedroom' levels, ...The 6AQ5 is a beam power tube based on a 6V6 and really does sound amazingly like one - only when really cranked to the max does it sound different and that's still good. The 6BQ5 is the EIAA designation for the European designed EL-84 pentode which sounds, to my ears, much like a EL-34 - a "family" resemblance."