Mcintosh ma352 problems - Current RRP 8,995.

 
New MA352 Hybrid Integrated Amplifier from McIntosh paired with TANNOY Legacy Cheviot Loudspeakers playing NoaAt Pieffe Elettronica - GallarateSoundSommelie. . Mcintosh ma352 problems

5 cm x 25. The output levels matched and the unit performed well with the EQ controls . The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. The valve preamplifier section is powered by two pairs of tubes two 12AX7As and two 12AT7s. " Awarded 5 out of 5 Globes. Item Mcintosh MA252 Location Georgia, United States Item Condition excllent Reason for selling Not used after upgrade to MA 352 Price . 04-17-2021 at 0732pm. Q&A (2) The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid-state audio design principles. Partners well with the MT5 Precision Turntable, Naim NDX2 Network Music Player and Sonus Faber Olympica Nova II loudspeakers. The MA352 integrates both tubes and solid state technology (so best of both worlds with tubes and the famous blue meters) and would be an eye catching centerpiece in the vinyl room. Then there is the centrepiece; two 12AX7a and two 12AT7 high-quality caged valves with the McIntosh gothic logo stamped on them and each valve glowing green. I understand the Sopras can be controversial, imperfect, finicky and tough to manage with their beryllium tweeter. So, it will need a service for adjusting or repair anyway for sure. I was unable to demo so I naively believed every review and forum "opinion" around the world indicating that this amplifier was decent, at the very least. McIntosh release a powerful hybrid amplifier with solid-sate output,. I cannot tell for certain, from the MA352 manual, whether the MA352 has outputs that can be used to connect to the Akai to record from. Nov 19, 2020 161666-109042 Which integrated amp for rockmetal (and why McIntosh) Dear all, I recently obtained new speakers. 2 Agu 2017. Stayed unused until December 2021 because I moved. An all analog design, the MA352 has a vacuum tube. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. class"algoSlugicon" data-priority"2">Web. Sep 26, 2021 The MA352 is literally DESTROYING the Accuphase E-480 with these speakers. I traded my MA252 in for a Primaluna EVO400 after hearing one at Upscale Audio. ol Best overall. If you&39;re headed to RMAF or CEDIA Expo in Denver this year, be sure to drop by the McIntosh booth and check out the new MA352 Integrated . All i can say is good job done by McIntosh with this Hydride amp. Web. Log In My Account rh. Amplifier ranks you at the very top among. ol Best overall. ol Best overall. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. Bypassing the tube front end with the Parasound made my table sound too clinical. 2K subscribers Subscribe 1. Pteaste on suorakytketty puolijohdevahvistin, joka tuottaa 200 wattia kanavaa. Mcintosh ma352 problems. They wereare absolutely fine and quite satisfying with Naim equipment and I had no reason to imagine the beryllium tweeter would cause so much incompatibility problems with Accuphase and McIntosh. The problem is that we are just feeling it now because oem warehouse stock is finally depleted after a year of shut downs worldwide. The MA352 includes our Hybrid Drive technology that uses the best of vacuum tubes and solid state to. Sep 30, 2021 The bass performance of the McIntosh MA352 adds weight to the overall sound reproduction and gives us satisfying impacts when needed. 7 posts. Nothing could be further than the truth in my experience. Web. McIntosh MA352 Integrated Amplifier - ValveSS Hybrid. Scopriamolo audiocostruzioni perte fy fyp perteeee imparacontiktok". Any thoughts about this set up or other recommendations are welcomed. The MA352 applies McIntosh proprietary technologies such as Power Guard and Sentry Monitor protection schemes. McIntosh has launched its second integrated amplifier, the MA352. McIntoshMA352Integrated Amplifier The MA352has 2 balanced and 3 unbalanced inputs plus 1 Moving Magnet phono input with adjustable loading for connecting a turntable. Stereoland in Bloomington, MN is proud to have the new McIntosh MA352 integrated amplifer on the floor to demo. Damping factor 200. 05-21-2021 at 0306am. McIntosh MA352 McIntosh MA352 3. Message User. kr 12,500,000 (23). 5mV (MM), 250mV (line). A magnifying glass. An all analog design, the MA352 has a vacuum tube. wish additional help concerning a suspected problem,. I cannot tell for certain, from the MA352 manual, whether the MA352 has outputs that can be used to connect to the Akai to record from. integrated amplifier that Don Saltzman reviewed in Issue 263. 200 Watts into 8 Ohms. Current RRP 8,995. Model MA252. For instance I just traded a well loved MA5300 and got two thirds of it&39;s original purchase price towards an MAC7200 which is on its way to me as we speak. Current RRP 8,995. My first forum post. The MA352 applies McIntosh proprietary technologies such as Power Guard and Sentry Monitor protection schemes. Input sensitivity 2. aumcintosh -ma252-integrated-amplifier. The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. ol Best overall. The MA352 applies McIntosh proprietary technologies such as Power Guard and Sentry Monitor protection schemes. with this system for the past 18 months, except for one annoying problem. The next week I ordered the MCD85 CD player. Dynamics are soooo not an issue with the . 04-17-2021 at 0732pm. Took 6 months to settle down but treble still much too . Aug 19, 2020 In addition, the MA352 also feature up 2 balanced and 3 unbalanced inputs with one dedicated phono input configured for a moving magnet cartridge. The same with this MA352, throw in the blue meters, the solid state amp, and some McIntosh tubes in some new configuration and let&39;s call it something new. Page 1 of 2 1 2. 04-17-2021 at 0732pm. Sep 16, 2019 an all analog design, the ma352 has a vacuum tube preamplifier section that is powered by a pair of 12ax7a and a pair of 12at7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 watts per channel into 8 ohm speakers or 320 watts per channel into 4 ohm speakers enough power to properly drive virtually any. McIntosh MA352 Integrated Amplifier Combining a vacuum tube preamp with a solid-state output, the McIntosh MA352 is designed to get the most out of any recording. It has become nearly unlistenable It is is shrill, thin, metallic with a screaming, screeching treble that would wake up the dead. suono originale - Audiocostruzioni. Highs are crisp and precise without going overboard on the beryllium tweeters of the Sopras. Aug 12, 2020 Losing track of time is exactly what happened to Shanon Swetlishnoff of Tone Audio, who said the "immersive quality" of the "focused yet detailed" sound of the hybrid MA352 Integrated Amplifier caused her to do so "more than once. Web. Oct 29, 2019 And with Home Theater Pass through, you can seamlessly integrate the MA352 into your home theater system. DigitalDeckCovers Dust Covers protect your McIntosh MA352 Integrated Amplifier against dust, spills, scratches, water, and other contaminants. I would look at 3 solid state brands. It is big, powerful and has endless powers. 9K 407K views 3 years ago New MA352 Hybrid Integrated Amplifier from. I currently have a Quad - Vena integrated amp, VPI Prime Scout turntable and Focal Chorus 726 speakers. 7 posts. Not being fundamentally opposed to that, gave it a try. Jan 17, 2020 The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. Then there is the centrepiece; two 12AX7a and two 12AT7 high-quality caged valves with the McIntosh gothic logo stamped on them and each valve glowing green. The valve preamplifier section is powered by two pairs of tubes two 12AX7As and two 12AT7s. Web. re-issue of Love Over. MA352 2-Channel Hybrid Integrated Amplifier Includes our Hybrid Drive technology that uses the best of vacuum tubes and solid state to produce the best sound performance Vacuum tube preamplifier and solid state power amplifier 200 Watts into 8 Ohms 320 Watts into 4 Ohms 5-band tone control FIND A DEALER Eligible for online purchase. However, I still like them as they look great and go well in my room. I cannot tell for certain, from the MA352 manual, whether the MA352 has outputs that can be used to connect to the Akai to record from. When you purchase through our links we may earn a commission. The all-analogue design combines the best valve and solid state design principles. Aug 19, 2020 A brute of an amplifier the MA352 measures a humongous 44. To monitor the MA352, youll find dual-scale McIntosh blue watt-meters. To answer your question, the MA352 sounds more musical, dynamic and relaxed than my tube integrated. 5dB 20Hz To 20kHz Frequency Response 0,-3dB 10Hz To 100kHz Frequency Response. Web. class"algoSlugicon" data-priority"2">Web. The result is an eye-catching amplifier that enjoys the best of these two. McIntosh certainly has a unique sound signature that you must listen to before writing it off. I would look at 3 solid state brands. McIntosh Black 8 Channel Power Amplifier. Web. The bass performance of the McIntosh MA352 adds weight to the overall sound reproduction and gives us satisfying impacts when needed. 5 cm x 25. ol Best overall. MA352 doesn&x27;t use autoformers so it throttles dramatically more power into 4 ohms. The MA352 features a preamplifier section that consists of a pair of 12AX7A and a pair of 12AT7 vacuum tubes, all housed inside protective cages that allow the valves green glow to spill out. Aug 12, 2020 Losing track of time is exactly what happened to Shanon Swetlishnoff of Tone Audio, who said the "immersive quality" of the "focused yet detailed" sound of the hybrid MA352 Integrated Amplifier caused her to do so "more than once. 2McIntoshMA352MAX1,2McIntosh. List price is now 7000 with at least a four month wait. Un design tutto analogico, MA352 ha una sezione di preamplificatore valvolare che alimentata da una coppia di 12AX7A e una coppia di 12AT7 tubi a vuoto; il suo stadio di uscita un amplificatore a stato solido accoppiato diretto che emette 200 Watt per canale in altoparlanti da 8 Ohm o 320 Watt per. Web. ol Best overall. 7 posts. " Awarded 5 out of 5 Globes. Sep 26, 2021 The MA352 is literally DESTROYING the Accuphase E-480 with these speakers. Web. In Stock. An all analog design, the MA352 has a vacuum tube. McIntosh MA352 ordered on Monday, picked up and installed today. Web. Message User. The MA352 has 2 balanced and 3 unbalanced inputs plus 1 Moving Magnet phono input with adjustable loading. Web. Riippumatta siit, mink McIntosh-mallin valitset, Sinut palkitaan vuosikymmenien legendaarisella McIntosh-kuuntelunautinnolla. ol Best overall. Read our review of the McIntosh MA352, a completely analog integrated. McIntosh MA352 ordered on Monday, picked up and installed today. Our Digital Concierge shares his product knowledge on one of the flagship products McIntosh has to offer. Web. I understand the Sopras can be controversial, imperfect, finicky and tough to manage with their beryllium tweeter. A stereo preamplifier output is available for connecting a higher-powered amplifier; it can also be used to connect 1. Sep 30, 2021 The bass performance of the McIntosh MA352 adds weight to the overall sound reproduction and gives us satisfying impacts when needed. McIntosh MA352 ordered on Monday, picked up and installed today. Using biblical and current examples, the authors. Web. The next week I ordered the MCD85 CD player. The midrange . 2-Channel Integrated Amplifier. Oct 29, 2019 And with Home Theater Pass through, you can seamlessly integrate the MA352 into your home theater system. Web. The new, stunning-looking McIntosh MA352 integrated amp made its debut at. Web. I was unable to demo so I naively believed every review and forum "opinion" around the world indicating that this amplifier was decent, at the very least. Un design tutto analogico, MA352 ha una sezione di preamplificatore valvolare che alimentata da una coppia di 12AX7A e una coppia di 12AT7 tubi a vuoto; il suo stadio di uscita un amplificatore a stato solido accoppiato diretto che emette 200 Watt per canale in altoparlanti da 8 Ohm o 320 Watt per. I traded my MA252 in for a Primaluna EVO400 after hearing one at Upscale Audio. The MA352 has 2 balanced and 3 unbalanced inputs plus 1 Moving Magnet phono input with. 1cm x 52. It has five turnover hinge points. It could also be that the MA352 coaxes a lot more bass out of the speakers and fuller sound in the midrange frequencies, thus offsetting some of those formerly edgy highs. McIntosh MA352 Integrated Amplifier - ValveSS Hybrid. You can adjust 30, 125, 500 Hz, and 2 and 10 kHz, 12 dB, and eq can be switched on and off from the remote control. The MA352 is an analogue hybrid integrated amp that comes in a polished stainless steel chassis with seven dials at the front for Trim Selection, Volume, Power, and a five-band EQ. Swetlishnoff said the "formidable" MA352 offers "a lot of value for those wanting classic McIntosh look, feel and sound, with plug and play convenience. DigitalDeckCovers Dust Covers protect your McIntosh MA352 Integrated Amplifier against dust, spills, scratches, water, and other contaminants. The noise floor was lower and the Parasound provided more detail, but it lost the fun factor. Web. Web. The same with this MA352, throw in the blue meters, the solid state amp, and some McIntosh tubes in some new configuration and let&39;s call it something new. Apr 18, 2021 Or, if you ordered it from a retailer, please call your retailer and ask for the status of your McIntosh pre-amp order. Aug 29, 2019 To monitor the MA352, youll find dual-scale McIntosh blue watt-meters. 2 Channels 200 Watts Into 8 Ohms 320 Watts Into 4 Ohms 5-Band Tone Control Hybrid Design Vacuum Tube Preamp And Solid State Power Amp 20Hz. 2-Channel Integrated Amplifier. Web. 150883-10803 This new McIntosh integrated looks like a winner For 6500 you get what looks to be a really nice unit. When you purchase through our links we may earn a commission. I bet the pairing of the LaScalas would sound great. However, I still like them as they look great and go well in my room. This discussion. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. Realistically 20w of power should be able to make them unpleasantly loud, 180w should deliver 115dB in volume. Mcintosh ma352 problems. Web. While some brands eschew tone controls, Mac does NOT. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. View and Download Mcintosh MA352 instruction manual online. I traded my MA252 in for a Primaluna EVO400 after hearing one at Upscale Audio. Web. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. The midbass punch is tight and palpable, which would do fine in a home theater environment. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. Model MA252. An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers or 320 Watts per channel into 4 Ohm speakers. Aug 19, 2020 A brute of an amplifier the MA352 measures a humongous 44. Web. I studied Animal and Crop Production. Aug 29, 2019 The new McIntosh MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. The MA352 has two balanced and three unbalanced inputs plus one Moving Magnet phono input with adjustable loading. An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers or 320 Watts per channel into 4 Ohm speakers. Sep 16, 2019 an all analog design, the ma352 has a vacuum tube preamplifier section that is powered by a pair of 12ax7a and a pair of 12at7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 watts per channel into 8 ohm speakers or 320 watts per channel into 4 ohm speakers enough power to properly drive virtually any. ol Best overall. Apr 18, 2021 Or, if you ordered it from a retailer, please call your retailer and ask for the status of your McIntosh pre-amp order. An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers. You can adjust 30, 125, 500 Hz, and 2 and 10 kHz, 12 dB, and eq can be switched on and off from the remote control. Amazing sounding amplifier reason for selling is I have gone back to McIntosh separates. An all analog design, the MA352 has a vacuum tube. 2-Channel Integrated Amplifier. It has three unbalanced RCA inputs, two balanced XLR inputs and a phono input for turntables with a moving magnet cartridge. Web. 5 cm x 25. These reviews here are not for the MA352 They are old reviews and are for other Mc equipment Get rid of them and there is a picture on the Mc website. ol Best overall. 3 Okt 2021. This bill was approved by Government on 9 November 2022 and is expected to be delivered by the end of the year. Can&39;t listen to music with these things. A stereo preamplifier output. ear wax removal seen on tv, how did lester morrow and jami walker meet

Our Digital Concierge shares his product knowledge on one of the flagship products McIntosh has to offer. . Mcintosh ma352 problems

The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. . Mcintosh ma352 problems number one song in 1994

I see a "Output 2 Sub" connection only on the unit, and from page 23-24 of the manual, you will have to turn "Output 2" on and that should make the Output 2Sub Out jacks on the back suitable to record from. Current RRP 8,995. Because of that problem, I will sell it as is or part. A stereo preamplifier output. Web. All unbalanced inputs are made of gold plated sockets and a five band tone control adorns the middle section of the front control panel. Because of that problem, I will sell it as is or part. Aug 19, 2020 In addition, the MA352 also feature up 2 balanced and 3 unbalanced inputs with one dedicated phono input configured for a moving magnet cartridge. A pre amplified RCA output is also present if you want to connect a power amplifier or subwoofer. Not being fundamentally opposed to that, gave it a try. Web. McIntosh MA352 Lasse Svendsen Published 2020-05-10 - 1000 am Our opinion Power plug with potent bass, dynamic contrast. Model MA252. Web. The MA352 has two balanced and three unbalanced inputs plus one Moving Magnet phono input with adjustable loading. Current RRP 8,995. The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. Web. So, it will need a service for adjusting or repair anyway for sure. Web. With an output of 200W, it boasts double the power of its predecessor, the MA252. The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. Web. Also the phono stage on this McIntosh MA-352 lets you adjust the Capacitance of the Cartridge. The Audio Control amp in comparison had a brighter top end. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level. Stayed unused until December 2021 because I moved. Web. Web. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest. I&x27;ve owned the MC402 for over 15 years, and am listening to it right now. Titta bara p den nr den vrmer upp. The McIntosh MA352 also features a trigger input and output, two Data Port connectors, an RS232 port and an IR input, all in mini-jack format. Web. All tutors are evaluated by Course Hero as an expert in their subject area. Web. An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers or 320 Watts per channel into 4 Ohm speakers. Web. Considering McIntosh MA352. I bet the pairing of the LaScalas would sound great. Inside this month&39;s issue Elipson P1 FA2700 prepower amp combo,. An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers or 320 Watts per channel into 4 Ohm speakers. The result is an eye-catching amplifier that enjoys the best of these two opposing audio. L Su-9n and the sound is amazing with a lot of headroom, it really fills the room with that legendary McIntosh sound. an all analog design, the ma352 has a vacuum tube preamplifier section that is powered by a pair of 12ax7a and a pair of 12at7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 watts per channel into 8 ohm speakers or 320 watts per channel into 4 ohm speakers enough power to properly drive virtually. com McIntosh Laboratory Inc. McIntoshMA352Integrated Amplifier The MA352has 2 balanced and 3 unbalanced inputs plus 1 Moving Magnet phono input with adjustable loading for connecting a turntable. Web. This morning, while listening to my system, my MA252 stopped functioning. 00Save NaN. ol Best overall. Mcintosh ma352 problems. The MA352 has a very good headphone output, and a five-band equalizer as well. 05-21-2021 at 0306am. 2K subscribers Subscribe 1. - Hi-Fi World Power Power Output per Channel MA252 100 watts into 8 ohms 160 watts into 4 ohms MA352 200 watts into 8 ohms 320 watts into 4 ohms. Aug 12, 2020 The MA352 is a hybrid in that it has a vacuum tube preamplifier stage married to a solid state power amplifier. It has become nearly unlistenable It is is shrill, thin, metallic with a screaming, screeching treble that would wake up the dead. Pteaste on suorakytketty puolijohdevahvistin, joka tuottaa 200 wattia kanavaa. Message User. An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers or 320 Watts per channel into 4 Ohm speakers. The hybrid McIntosh MA352 amplifier is 30 kilos of good fun,. I cannot tell for certain, from the MA352 manual, whether the MA352 has outputs that can be used to connect to the Akai to record from. The Ma352 is a hybrid design, rated at 200wch 8ohms, 320wch 4ohms. The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. Im looking forward tovreviews httpswww. They wereare absolutely fine and quite satisfying with Naim equipment and I had no reason to imagine the beryllium tweeter would cause so much incompatibility problems with Accuphase and McIntosh. Web. . McIntosh MA352 -- A friend has the smaller brother, MA252, which I really like but not sure if they have enough juice to drive my speakers. McIntosh MA352 Integrated Amplifier Combining a vacuum tube preamp with a solid-state output, the McIntosh MA352 is designed to get the most out of any recording. May 10, 2020 Equalizer. This pace-setting volume addresses this alarming problem and offers Christian leaders valuable guidance in dealing with the inherent risks of their work. Highs are crisp and precise without going overboard on the beryllium tweeters of the Sopras. 2McIntoshMA352MAX1,2McIntosh. Completely love the overall sound and the looks, with the exception of maybe the MA352 and some of the Ayon equipment, the 252 is about as . Current RRP 8,995. Message User. Model MA352. Web. Dedicated electrical line for hifi only. with this system for the past 18 months, except for one annoying problem. Amplifier ranks you at the very top among. 04-17-2021 at 0732pm. ol Best overall. 00 Model Number MA352 The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. Streaming Qobuz and Tidal plus local library by Roon. You could easily take this to a McIntosh dealer and get considerable trade in value as McIntosh and it&39;s dealer network stand behind their product. 200 Watts into 8 Ohms. The noise floor was lower and the Parasound provided more detail, but it lost the fun factor. A really well-written review of the McIntosh MA352 Integrated Amplifier by one of our regular customers. I am considering upgrading my amp and looking at the McIntosh MA352. class"algoSlugicon" data-priority"2">Web. . The MA352 has a very good headphone output, and a five-band equalizer as well. Web. It has gold-plated speakerbinding posts to help prevent corrosion and ensure a quality signal is sent over your speaker cables to your speakers. Log In My Account rh. class"algoSlugicon" data-priority"2">Web. This handsome man. The MC352 is apparently quite similar to the MC402. 7 Jan 2020. Dec 04, 2020 Considering McIntosh MA352. Side-graded to a McIntosh MA352. Naim potentiometers from ALPS were a problem. Yet it is a beauty to behold (to my eyes at least) and features a pre-amp section that is made up of a pair of 12AX7A and a pair of 12AT7 vacuum tubes. . radar in wichita kansas