First generation Woo Audio Fireflies WA7, used. I bought this directly from Woo Audio owner when I lived in Brooklyn in 2020 and has been used only by myself. Tubes work flawlessly. The transparent glass block on the top has no chips of breaks, only superficial fingerprint smudges. Used this headphone amp for a couple years until I ended up getting an amplifier with a built-in headphone amp, now I no longer have a use for this one. Comes with standard corded power supply. Feel free to contact with any questions. Free pick-up or local delivery in San Antonio, TX

Amplifier comes with all stock tubes as well as upgraded NOS RCA and TungSol tubes as shown in the pictures. Experience high-quality audio with the Woo Audio WA22 Gen2 Fully-balanced Headphone Amplifier in Black. This unit offers stereo L/R RCA and XLR audio inputs, as well as audio outputs in the form of a headphone jack, dual 3-pin XLR, 1/4 (6.3mm), 4-pin XLR, and XLR. With a power output of 1.5 Watt Per Channel, this tube headphone amplifier is perfect for enhancing your music listening experience. The Woo Audio WA22 Gen2 comes equipped with 2 channels and 2 inputs, making it a versatile addition to any home audio setup. Its sleek black design adds a touch of style to your listening experience. Get ready to immerse yourself in high-quality audio with this top-of-the-line headphone amplifier. OverviewOriginally introduced in 2009, WA22 has been an audiophile favorite. New for 2018 is improved sonic performance and preamplifier feature for use with a Hi-Fi system. WA22 (2nd gen) is an all-tube design, fully balanced headphone amplifier and preamplifier. The advantage of a fully balanced system is improved channel separation, more precise soundstage, and imaging. Perfectly suited for the headphone enthusiast and experienced audiophiles seeking flexibility and purest sound.OverviewOriginally introduced in 2009, WA22 has been an audiophile favorite. New for 2018 is improved sonic performance and preamplifier feature for use with a Hi-Fi system. WA22 (2nd gen) is an all-tube design, fully balanced headphone amplifier and preamplifier. The advantage of a fully balanced system is improved channel separation, more precise soundstage, and imaging. Perfectly suited for the headphone enthusiast and experienced audiophiles seeking flexibility and purest sound.Updated to 2nd generation in March 2018Tubes: 6SN7 driver x 2, 6080 power x 2, 5U4G rectifier x 1Polytetrafluoroethylene (PTFE) tube socketsALPS RK27 4-channel balanced smooth potentiometerFully-balanced design, Class-APower output: up to 1.5 watts per channel @32 Ohms [recommended for power demanding headphones] Transformer-coupled, Point-to-Point wiring, Pseudo-dual power supplyPhase Splitter for use with unbalanced componentsHI / LO impedance settingXLR input x 1, RCA input x 1Dual 3-pin XLR (left and right channel), 4-pin XLR and 1/4 (6.3mm) stereo headphone outputsXLR balanced PREAMP output (<50 ohms)Anodized aluminum chassis, available in black or silverSelf-biasing with compatible tubes [chart]Dimensions: 7(H), 12(W), 10½(D) amplifier 25 lbs.Designed and assembled in New York, USA Highlights

PREOWNED - $1000 LIST! - FULLY TESTED - BLACK - INCLUDES ORIGINAL BOX/PACKING, TUBES, POWER CABLEHandcrafted since 2008, WA6 (2nd gen) has set the standard for headphone amplifiers in its class. It can drive full-size headphones and in-ear monitors ranging from 8–600 Ohms with ease. WA6 (2nd gen) is an all-tube design, Class-A, transformer-coupled, single-ended triode (SET) amplifier. Under the hood of the all aluminum chassis is the same clean point-to-point wiring and premium quality parts found in our top tier models. WA6 (2nd gen) is an exceptional headphone amplifier for every music lover. Updated to 2nd generation in April 2017 2nd gen is a minor update to driver/power tubes from 6v to 13v Tubes: 13DE7 driver/power x 2, 5U4G rectifier x 1 Polytetrafluoroethylene (PTFE) tube sockets Singled-ended Triode, Class-A Transformer-coupled, Point-to-Point wiring Pseudo-dual power supply RCA input x 1 HI / LO headphone impedance switch 1/4 (6.3mm) stereo headphone output (8–600 Ohms) ALPS potentiometer and power switch Anodized aluminum chassis, available in black or silver Self-biasing with compatible tubes Global voltage (100v–220v) without converter Dimensions: 6(H), 5½(W), 13(D), 13 lbs. Designed and assembled in New York, USA Hi-Fi Heaven1549 Sixth StGreen Bay, WI 54304Contact us with your exact shipping address for accurate shipping cost.Larger speakers and items over 150lbs are strapped to a pallet and shipped via Freight including liftgate and residential delivery.We accept Pay-Pal or credit cards by contacting our store.We offer a 4% discount with payment by Zelle or check.Defective items are exchanged within 14 days from delivery.After 14 days, the manufacturers warranty will apply. Contact us for any assistance in obtaining warranty assistance.Defective item returns must be in the manufacturers original packaging, in like-new condition, including all packaging materials, shipped as-received and fully insured.Items are guaranteed to be as described.If a refund is desired, we will refund your full purchase price minus a 20% restocking fee.The item must be as received & unopened. Buyer pays return shipping costs.If you are having a problem, Please call before making a return claim on eBay.We do not offer free auditions or trials of merchandise.Returns will only be accepted for items that are truly defective.We use methods to detect product tampering.We will seek legal action against any individual or entity attempting to defraud us.Hi-Fi Heaven1549 Sixth StGreen Bay, WI 54304

PRODUCT DESCRIPTIONWoo Audio WA7/WA7 TP - 1st Generation - PICK-UP in LA ONLY! Normal 0 false false false EN-US X-NONE X-NONE Description Dive into the world of pure tube, class-A amplification with the Woo Audio WA7 Fireflies. This transformer-coupled amp delivers a sound thats as linear as it is captivating. Equipped with well-burnt-in stock tubes, the WA7 offers a balanced auditory journey: sparkling highs with a breath of air, solid midbass impact with substantial body, and mids that seamlessly bridge the spectrum without overpowering the experience. Its a harmonious blend that pleases the ear. The DAC, much like the amp, embodies cleanliness and spaciousness in its sound. It strikes a delicate balance between being laid back and engaging, providing a soundstage thats both wide and deep. Comparing it to the Dacport LX, the WA7’s built-in DAC shines with a clearer, airier quality. For this review, my go-to headphones were the HD650 and the Alpha Dogs, with a preference for the HD650 for its warmer tones. The Alpha Dogs, while cleaner, left me wanting more in terms of bass impact—a testament to the WA7s ability to enhance what your headphones already do well, rather than altering their inherent characteristics. The beauty of the WA7 lies in its adaptability. While its stock form preserves the natural sound of your headphones, Woo Audio’s upgrade option, the Electro Harmonix 6C45 tubes with gold-plated pins, invites a transformative audio experience. These tubes offer a darker, richer sound profile, with lush mids and robust bass that make voices soar and rock music pulse with energy. Theyre a delightful twist for those looking to explore beyond classical genres, which I found more suited to the balanced nature of the stock tubes. In essence, the Woo Audio WA7 Fireflies acts as a chameleon, capable of highlighting the strengths of your headphones while offering the flexibility to shift its sonic signature with upgraded tubes. Whether your audio diet consists of vibrant rock or intricate classical compositions, the WA7 Fireflies offers a gateway to rediscover your music in a new light. Included with Your Purchase: 1 X Woo Audio WA7 Fireflies 1 X Woo Audio WA7 Accessories NOT Included with Your Purchase: 1 X MG Chemicals 99.9% Isopropyl Alcohol Electronics Cleaner ***Please see photos for details and condition*** All audio equipment listed has been meticulously cleaned and sanitized using MG Chemicals 99.9% Isopropyl Alcohol to ensure top-notch condition and hygiene. PURCHASE DETAILSPlease continue with your purchase only if you agree to all the terms listed below:All products listed are 100% authentic and have never been used, unless otherwise stated.Packages may have been opened to inspect the contents inside.Terms may be subject to change without prior notice.International Buyers – Please Note: The item price and shipping cost do not reflect or include any charges pertaining to import duties or taxes. The buyer is responsible for the aforementioned charges. To determine what these additional costs will be prior to bidding or purchasing any of our items, please confer with your country’s customs office.PAYMENT We accept payment using major credit cards through PayPal. Payments must be received within 7 days after auction has ended or upon purchase.Please note that any payments made to us do not include any import tax, duty, VAT, or brokerage fees that you (i.e., the buyer) are responsible for.SHIPPINGWe ship daily from Monday-Friday from the United States. All orders will be shipped within 48 hours of receiving payment, unless otherwise specified.We will only ship to the address that is provided during payment/checkout. Shipping and handling rates are fixed and non-refundable. Public holidays and Sundays are not included in the expected delivery date.We are not responsible for packages held and inspected by customs, which may result in longer delivery times.We ship from a clean, pet-free, and non-smoking environment. Bubble wrap is used when necessary to secure any loose, moving parts. RETURNS AND REFUNDSReturns and RefundsPrior to shipping, our products are inspected and ensured they are in good condition and packaged appropriately. We strive for customer satisfaction. In the event you are not fully satisfied with the products you have received, please let us know and we will make it right.Please contact us within 48 hours of receiving your items if they are damaged, and we will gladly give credit or money back for the damaged items. Returns with missing accessories will not be accepted. The shipping fee/potage cost of returning damaged items is covered by the buyer.To receive credit or a refund, items must be returned in the original, unopened (item’s) package with all parts and accessories included. Items must be in-transit back to us within 2 weeks of receiving your package to receive credit or a refund.ContactWe will only contact you through your registered e-mail address with eBay. Please ensure it is working or provide us with an alternative e-mail address we can reach you at. We try our best to respond to all messages within 48 hours, but please bear with us should we take longer. However, do not hesitate to send us a follow-up email if it has been more than 4 days since you contacted us; there is a possibility we did not receive your e-mail or our reply was sent to your spam/junk folder by mistake.FeedbackIf you are happy with our product, please leave us positive feedback when using eBay’s automatic feedback system. It means so much to us!If you are unhappy with any aspect of the transaction, please contact us prior to leaving any feedback - we want to make things right. Leaving negative or neutral feedback denigrates any support from us regarding problems with your purchase. ABOUT US We strive for the best customer satisfaction and shopping experience, so if you have any questions, please do not hesitate to reach out to us, and we will do our best to reply to you in a timely manner!

Woo Audio GES STAX Electrostatic Headphone Amplifier Silver Model WA-GES - Tested Tested using STAX SR-30 headphones (not included)Both inputs working, selector switch on back workingVolume control working. Smooth potentiometer movement, not detentedWhen powered on, the Woo Audio GES STAX tube amplifiers blue LED indicator will flash, signaling the warm-up process. Once the amplifier has warmed up, the blue LED will stay lit continuously, indicating that the device is ready for use and sound is enabledIncludes power cord Includes set of 8 stock tube set from Woo Audio, as follows:x4 6S4 United Electron Tubesx4 12AX7 Electro-Harmonix TubesSpecs:Polytetrafluoroethylene (PTFE) tube socketsPush-Pull direct drive, Class-AHigh-performance Solen and WIMA capacitors, Point-to-Point wiringRCA input x 2STAX Pro Bias 5-pin EarSpeakers outputALPS potentiometer and power switchAnodized aluminum chassis - silver colorSelf-biasing with compatible tubes Global voltage (100v–240v) without converterDimensions: 5½(H), 13(W), 10½(D), 22.5 lbs.Standard signs of use. May have cosmetic wear and/or scuffs.Some scuffs and marks on left side of baseSome small nicks on top plates and various other areasSee photos for more detail. Includes only what is pictured. Includes AC power cord Does not include any additional cables/componentsThe buyer is responsible to confirm compatibility of this item with their existing system/setup. Return shipping cost due to incompatibility would be at the expense of the buyer. Purchase with confidence: We are experienced with selling and shipping this type of item and we will package properly for safe transit.Please do not hesitate to ask any questions prior to purchase. R2v3 CATEGORY C4/F4 NON-DATA

Woo Audio WA7 (gen 3) all-in-one dac / amp paired with Apos Ray Tubes. The WA7 gen 3 is an amazing all-in-one dac / tube for someone who is looking to dive into the tube world but does not want to go down the rabbit hole searching for combinations. The Apos Ray Tubes have been added which provides a clear and detailed upper frequencies while maintaining the tube lush sound signature. The reasoning for selling is that it is not powerful enough to power my Diana DZ properly. It is in great working condition and does not show any signs of significant use. This product comes with everything seen in the photos and not the original packaging. A slight shipment fee will be added to this order due to the WA7 being extremely heavy. Please reach out to me if you have any questions and look up the product page for exact specs.

Woo Audio WA11 Topaz Headphone Amplifier/DAC: A Masterpiece of Sonic Excellence The amp is in excellent condition only used 3 times for 60 min intervals. I am selling to upgrade to another Woo Audio Amp. The Woo Audio WA11 Topaz Headphone Amplifier/DAC is a true audiophile's delight, combining exceptional craftsmanship with cutting-edge technology to deliver an unparalleled listening experience. This exquisite piece of audio equipment is a testament to Woo Audio's unwavering commitment to sonic perfection. Design and Build Quality Crafted with meticulous attention to detail, the WA11 Topaz boasts a stunning aesthetic that seamlessly blends vintage charm with modern sophistication. Its sleek, all-aluminum chassis exudes a sense of timeless elegance, while the precision-machined components and hand-wired circuitry ensure uncompromising quality and durability. Amplification Prowess At the heart of the WA11 Topaz lies a powerful amplification stage that delivers an exceptional level of detail, clarity, and dynamic range. Utilizing a proprietary circuit design and premium components, this amplifier effortlessly drives even the most demanding headphones, revealing the subtlest nuances and intricacies in your favorite recordings. Digital-to-Analog Conversion Complementing its amplification capabilities, the WA11 Topaz features a state-of-the-art digital-to-analog converter (DAC) that ensures pristine audio reproduction. With support for a wide range of digital audio formats, including high-resolution PCM and DSD, this DAC faithfully translates digital signals into rich, analog soundscapes, preserving every detail and nuance. Excellent Condition This particular unit is in excellent condition, having been meticulously cared for and maintained by its previous owner. It showcases minimal signs of wear and tear, ensuring that you can enjoy its exceptional performance and stunning aesthetics for years to come. Whether you're an audiophile seeking the ultimate listening experience or a music enthusiast looking to elevate your audio setup, the Woo Audio WA11 Topaz Headphone Amplifier/DAC is a true masterpiece. Its exceptional sound quality, impeccable craftsmanship, and timeless design make it a worthy investment for anyone who appreciates the finer things in life. Headphones is photo not included. Comes with original box and accessories

I bought this new in Singapore back in 2020. It was professionally packed and shipped back to the US in 2022 where it has been in a climate controlled environment for two years, packed and unopened. I opened it for the documentation for this auction. The tubes and amp have an estimated 80 hours of play since originally purchased. I will include the OG receipt. Here are the Specs: Updated to 2nd generation in March 2018 Tubes: 6SN7 driver x 2, 6080 power x 2, 5U4G rectifier x 1 Polytetrafluoroethylene (PTFE) tube sockets ALPS RK27 4-channel balanced smooth potentiometer Fully-balanced design, Class-A Power output: up to 1.5 watts per channel @32 Ohms [recommended for power demanding headphones] Transformer-coupled, Point-to-Point wiring, Pseudo-dual power supply Phase Splitter for use with unbalanced components HI / LO impedance setting XLR input x 1, RCA input x 1 Dual 3-pin XLR (left and right channel), 4-pin XLR and 1/4 (6.3mm) stereo headphone outputs XLR balanced PREAMP output (<50 ohms) Anodized aluminum chassis, black Self-biasing with compatible tubes [chart] Dimensions: 7(H), 12(W), 10½(D) amplifier 25 lbs. Designed and assembled in New York, USA The original three year warranty is NO LONGER applicable!!!!! Buyer assumes all risk after purchasing and receiving. $150 shipping and handling. This item will be double boxed with foam packing in addition to the original box listed here in this auction. All images are considered as part of the description as this is the unit you will receive. What you will receive: WA22 (2nd gen) headphone amplifier/preamplifier x 1 6080 vacuum tube x 2 6SN7 vacuum tube x 2 5U4G (5U3C) rectifier tube x 1 Quick start guide *AC power cord and audio cables are not included

The amp has been in my private audio collection since 2016 and is in emasculate condition. I upgraded all its tubes including the rectifier tube to Woo’s Sophia Princess. The amp comes with the original tubes as well and all original boxes and packing. The amp and tubes will be shipped in two separate boxes. Ken Rockwell’s review of Woo’s WA6-SE Anyone who has spent time with the headphone community has undoubtedly crossed paths with Woo Audio at some point. Jack Wu has been producing quality amplifier pieces on both the loudspeaker and personal audio front for some time now. His prolific headphone amplifiers have really grown into an amazing product line, catering to the entry level as well as soaring into the high-end stratosphere with his exceptionally unique monoblock WA234 (~$15k). Yes, that’s right — monoblock amplifiers for headphones. The good news is that Woo has a well conceived product trench dug out, leading up to the big guns, so anyone willing and able to dip their toe into the fidelity water can have at it without sacrificing and arm and a leg (or an ear). I’m not referring to an audiophile “budget” piece north of four figures either. A newcomer can dive into the Woo pool for about $520 with the single ended OTL WA3. The spotlight of this review rests on the product that lands at the pseudo-median of this line. The WA6-SE ($1.2k) is a SET Class A transformer coupled headphone amplifier that pushes a few extra watts over the “regular” WA6 and also includes a separate power supply housed in its own casing. Unlike many of the tube-injected hybrid amps that head-fi manufactures have been introducing in greater numbers the past couple of years, the WA6-SE is of an all-tube design that incorporates a separate, upgradeable rectifier tube section. The construction and quality of the Woo product line is absolutely first rate. Countless reviews have been written heralding his relentless attention to detail. The build of the WA6-SE is what you would expect from any grand audiophile product, even at pricepoints far exceeding its own. It is sturdy, well-designed and exceptionally heavy although its size is still surprisingly manageable. Computer desktop warriors take note. The overall look and recessed branding manages to be both classy and sexy at the same time: it’s a looker. Throw the warm glow of some shapely tubes on top of that and you can easily see one of the reasons why the old school technology has stood its ground against the imperialistic march of solid-state amplification. The well-machined casing leaves you with the feeling that it would suffice as cannon ammunition as well as it plays music. The power supply and drive tube sections are connected via a supplied “umbilical” power cord and bear a resemblance to the [CanJam design reviewed here]. When it comes to transporting the unit, a few owners I have spoken to have expressed a bias towards the ease of the one-piece units, like Jack’s WA22. While transportation might involve a small additional step, I didn’t notice any conclusive drawbacks to this separatist arrangement, both setup and use were as simple as you would expect. At the end of the day, I am fully impressed with the shell that encompasses the innards of this beauty of an amp. It is truly built like a tank and would be a welcome visual complement to any audiophile’s headphone rig. The back of the unit includes two single ended analog inputs. The RCA connectors look and feel a step up from your usual stock part fare. The input selector switch is located in between the two inputs on the rear panel of the drive tube section, a unique variation on the usual front-facing implementation. The front of the WA6-SE features a single on/off rotating aluminum knob on the power supply and separate high and low single-ended headphone jacks on the drive tube case. I discovered that I favored the low jack when listening to the Audeze LCD-3 planar magnetic headphone. Power with the WA6-SE is quite ample. Even when utilizing the low jack, the amplifier had no problems pushing the 300-ohm Sennheiser HD 650s to extreme levels, normal listening volumes came in around a respectable 10 o’clock. As I was running the Woo through the paces, I noticed something I’d never heard before from a headphone amplifier. With no headphones plugged in and the volume knob up near its maximum, I could actually hear music bleeding out from the amp itself. As with almost all tube headphone amplifiers I reviewed, a slight hum was detectable through headphones on the low impedance extreme, in this case the 18-ohm Sennheiser Momentums. All nit-picking aside, I found the both the 650 and Momentum to pair quite nicely with the WA6-SE. Playback through the HD650 exuded an openness and top end air that was palpable. If you are a fan of Sennheiser headphones, the WA6-SE is worth an audition. The Woo continued to impress with the closed-back Momentums. The pairing presented itself with a liveliness and satisfying fullness that pushed the $300 headphone even further from its budget roots. But the WA6-SE isn’t really about driving headphones that cost a quarter of its ticket value. The more revealing Audeze LCD-3 added some additional perspective to the listening party. The new DAC2 D by Benchmark offers a solid DAC and headphone amplifier combination. Running the single-ended output into the WA6-SE begged for a direct comparison against the almost “0 Ohm” headphone amp built into the DAC2 D. The resulting Benchmark output is precise, almost to a fault. And in turn the Woo felt a little less dry in the vocal region by comparison. Listening to Diana Krall’s Glad Rag Doll, the WA6-SE presented wider than average soundstage. While the overall perceived articulation of the midrange was perhaps slightly less, the Woo rang true with a more pleasing sense of tonality. Like a good steak, the midband was both juicy and thick. It leaves you with a sense of vocal fullness, but not without perhaps a hint of color as well. The 24/96 track Lucia by Marta Gomez felt as if the vocals were a bit less biting as airflow passed though Marta’s windpipe as she sang. This subtle smooth texture was further complemented by a believable sense of air and space surrounding her performance. The overall reproduction of the 6SE is flat and neutral as any good amplifier should be. The low end didn’t reproduce any unruly anomalies, and tightness and texture are both on par with other amps at this price range. The second half of the Nine Inch Nails track “Ringfinger” from the early album Pretty Hate Machine features a slight change in direction around the 4:07 mark that is riddled with dynamic and rhythmic bass synth sounds. During the outro, the Woo didn’t falter or hesitate with its unaltered recreation of the intricate passage. The synths darted in and out with fullness and surprising dimensionality for a virtual instrument that exists only in the dark, dusty corners of Trent’s mind. For all this low frequency vibrancy, the Benchmarks solid-state amplification did highlight perhaps the unavoidable wrinkle of the tube. So subtle it almost flew under my radar, but while listening to Metallica’s Master of Puppets I did notice a bit more bass slam and impact from Lars’ syncopated bass drum beats than from the Benchmark direct. The Woo is by no means weak in the knees when it comes to bass, but rather subject to the slightly common trait I have noticed from products on the tubular side of headphone amplification. This subtlety is not something that you would probably ever notice without a direct comparison to draw from. Orchestral and vocal-centric music will benefit greatly from the WA6-SE’s strengths. The Sophia Princess Rectifier tube is a popular upgrade to the WA6-SE. It’s double mesh screen houses a glowing “V” that is a real ocular treat to the amplifiers presentation. The tube is available as an add-on and can be purchased directly on the Woo site along with the amp. Compared to the stock 274B tube, the Princess sounded a bit more open with a wider soundstage. This slightly more enveloping sound carried a dash of vibrancy with it that made it easier to pick out individual instruments out of the mix. While this tube doesn’t come cheap ($160 on the Woo site), its addition was pleasing and is a great starting point for a tube rollers collection. Overall the Woo WA6SE packs plenty of punch tied to a tonal richness that can stand toe to toe with any headphone amplifier in its price range. It is the classic amp of its time, built with a keen eye for detail and a welcome sense of longevity that makes you think it’s one of those pieces that you could hand down to your kids. The build is in a class all its own, one that far exceeds its price bracket. The fine craftsmanship of its construct is just a window into the capabilities of its inner sonic beauty. If tubes are your thing, then Jack Wu is your man. While many of Jack’s products would be a great addition to any audiophiles collection the WA6-SE will strike a sweet spot in the price to performance balance for many. Its power output is as impressive as its aesthetics.

Up for sale is a spectacular Woo Audio WA7 Fireflies Gen 2 DAC/amp combo in equally spectacular condition. The DAC portion consists of a top-of-the-line ESS Sabre ES9018K2M chip with USB input whereas the tube amplifier is equipped with two Russian-made SOVTEK 6C45 tubes. The amplifier has a clean sound with the analogue warmth of the tubes tastefully implemented. Item is in perfect cosmetic and operational condition, with no issues, and comes with all original components. Item includes the OEM solid state power supply. Item will be packaged with the utmost care, with more fragile components being shielded from any possible damage.

Woo Audio WA6 Gen 2 - SET Tube Amp for Headphones Includes upgraded NOS tubes 13EM7 (with adaptor so they fit the amps sockets). Also included are the stock tubes, including original 13DE7s, which also sound pretty good, but are somewhat brighter. This is a terrific sounding tube headphone amp for both high and low impedance headphones -- Ive even run planar magnetics off this thing. Smooth excellent sound. The amp retails for $1000 and upgrade tubes for $220 a pair. I have owned this amp for about 1.5 years -- in excellent condition and functions perfectly.

Great condition WA6 tube amp. This is the first generation model. It comes with two rectifier tubes. RCA 5U4G and a Mullard GZ34. The Mullard is a well regarded rectifier for the WA6.driver tubes are stock Sylvania tubes.all in perfect working condition.