Kt150 triode mode 9dB) • Input impedance: 100 Kohm • Recommended speakers: 4-8 ohm • Tube complement: 4x dual triodes, 4x KT120/KT150 Power Pentodes • Input Each of the Ayon Epsilon Gen 4 monoblock amplifiers utilize six KT-150 power tubes, giving way to power ratings at 180 wpc @ 8-ohms and 250 watts @ 4-ohms in pentode mode, or 100 wpc @ 8-ohms and 150 watts @ 4 Class of OperationTriode* or Pentode mode, Class-A*Tube Complement8 x KT150 12AU7 6SJ7Load Impedance4 & 8 OhmsBandwidth8Hz - 70kHzOutput Power:Pentode mode2 x 125 WOutput Power:Triode mode2 x 80 WFrequency Response10 Hz – 60 kHzInput Impedance at 1 kHz100 KΩInput sensitivity (full power)1VNFB0dBVolume ControlMCU based with analog They use KT150 output tubes and have a beautiful metering system on the front that allows you to keep track of how much power you’re using. (100w) and Triode mode (50w) to give the maximum choice of operating conditions. 5″ deep x 8″ tall- weight (unboxed): 45 lbs. 6A3sUMMER. Triode* or Pentode mode, Class-A*: Tube Complement: KT150 or KT170: Load Impedance: 4 & 8 Ohms: Negative Feedback: 0dB: Bandwidth The front panel design of the A-2000 MK3 has changed significantly from its predecessor’s, and most importantly, the output tubes have changed from the KT150 to the KT170. It can run in Petode mode delivering 130W per channel or triode mode with 70W per channel pure Class A. Read the latest review by Hi Fi News. MCU based with analog Triode* or Pentode mode, Class-A*. Search using Google: ". My preference with the 8-tube DiaLogue Premium Brand New! – Closed BoxWe are authorised dealers of the finest audio gear and musical instruments. Shipping price to any other country is an estimate. Triode* or Pentode mode, Class-A*: Tube Complement: KT150 or KT170: Load Impedance: 4 & 8 Ohms: Negative Feedback: 0dB: Bandwidth • Output power: 50 Watt per channel (KT150) • Frequency response: 20 Hz-25 KHz (-0. There probably are more “triode mode” than ”pentode mode” Spice models floating around for the big boys - hence the question. 5V Ultra Linear mode • Inputs: 1x line unbalanced stereo (RCA and XLR 250v plate, z1:2500ohms, driver 6U8 as triode . I think they only make the bigger KT120´s & KT150´s. 8Hz-70kHz. The only commercial amp that I know of that uses KT150's is the Ayon Sprit 3 from Austria. They can be operated in ultra-linear mode, which gives you the full 140 Watts of output power, or they can be run in triode mode, which gives you about half Switchable between pentode and triode mode. Beetles suggestion regarding the 200 hours break in may AB Class push-pull, UL /Triode mode, Fixed bias (semi automsatic adjustment system) Voltage amplification stage: 2 stages, Phase inversion - differential amplifier (first stages) B -Power: MOSFET, ripple filter (for L and R separately) Tube options: Output tube : EL34/6CA7 (standard) x 4 pcs. Good for the 92+ dB efficiency crowd. Customer feedback indicates that 80% of customers listen to Triode mode most of the time. - EL34, KT120 or KT150 available upon request; Dimensions-18. KT150- triode-mode= 45 watts/U. Had some email conversations with Kevin @K&K, after I have crossed the 100 hour mark I can start to increase the bias, up to 150mA each. and it sounds closer to something between EL34 and KT88s in triode mode in my prior Cary or Inspire amps. Member. Each of the Ayon Epsilon Gen 4 monoblock amplifiers utilize six KT-150 power tubes, giving way to power ratings at 180 wpc @ 8-ohms and 250 watts @ 4-ohms in pentode mode, or 100 wpc @ 8-ohms and 150 watts @ 4-ohms in pure Class-A triode mode. 10 Hz – 60 kHz. Volume Control. 4 & 8 Ohms. This is not only the decision between good and bad tubes but finally Switchable between pentode and triode mode Ideal also for more difficult loudspeaker loads. Tube Complement KT150 or KT170. Triode* or Pentode mode, Class-A*: Tube Complement: 4 x KT150, KT88 or EL34: Load Impedance: 4 & 8 Ohms: Bandwidth: 15Hz – Switchable between pentode and triode mode Ideal or more difficult loudspeaker loads. Has anyone here gone from using KT120's in their amp to KT150's and preferred the KT150 tubeconversely has anyone gone from KT150's in their amp to K Audiogon The world's largest high-end audio community. These are in fixed-bias mode which gives maximum power, cool running and even indicates valve condition. Output Power / Pentode 1 x 130 Watt This means you get a power amplifier that uses an almost identical arrangement of two 6H30 double-triodes in the gain stage with multiple pairs of KT150 power valves/tubes in either push-pull or triode mode with auto-biasing, adjustable fan speed, those excellent look-through ‘Ghost Meters’ and all the trimmings. I updated my cabling all around the system to Audience SX (from SE), and I put a really clean pre-amp It produces from 40 watts of Triode-strapped sound to 120 watts of ultra-linear power- these mono blocks are robustly over-built and can handle virtually any speaker with ease! The amplifier can use EL34s, KT88s, KT120s, and KT150s The Triode mode removes some of the bottom and top end which sounds flat with my system. The MB90 is a very cost effective way of getting a large 60 watts Triode output without the expense of large Triode valves. IIRC there is a little more power available with the 150's, making triode mode more compatible with more speakers. IME, the more efficient and easier-to-drive the speaker, the more likely the Stereo 40 or Stereo 60 will sound just a bit better in triode mode. The fact that the glass envelope has no flat sides means the Tung-Sol KT150 has no problems with microphonics. Pure Triode mode has equal emphasis here. Output Power:Pentode mode. This is Stereo Amp (not the integrated version) and has a better input stage and more power than the integrated version. The KT150 will be at Va~540v 10 to 12 watts is probably the limit in triode mode. 05% 1khz; 4 and 8 ohm Class of Operation Triode* or Pentode mode, Class-A* Tube Complement KT150 Load Impedance 4 & 8 Ohms Bandwidth 10Hz – 60kHz / -3dB Output Power-Pentode mode 2 x 70 W Output Power-Triode mode 2 x 45 W Input sensitivity for full power 500mV Input Impedance at 1 kHz 100 KΩ NFB 0dB Volume Control Alps Potentiometer Remote Control Yes The Tung-Sol KT150 glass envelope is a special egg shaped balloon that was developed to improve thermal dissipation and maintain a superior vacuum for the best sound. Triode versus Ultralinear. Triode* or Pentode mode, Class-A*: Tube Complement: KT150 or KT170: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz-70kHz: Output Power /Pentode mode KT150: 1 x 250W: Output Power /Triode mode KT150: 1 x 170W: Frequency Response: 12 Hz – 60 kHz: Input Impedance at 1 kHz: 47 KΩ: Input sensitivity ( full power ) 1000mV: S/N ratio at full power: 98 We are proud to introduce our new KT150 mono power amplifier, the Triton Evo. Aric said, "The KT150's are very linear and neutral sounding and quite large-scale power tubes". 5db full power; THD less than 0. mode=65 watts; Ships with Tung Sol 6SN7’s and Svetlana EL34 (stock). The sonic characteristics of the KT150 are a little fluid and warmer when used in this way. No issues, at least day 1. The KT170 has a different shape and is larger than the KT150, and the KT170’s plate loss, which is used to measure the output, has increased from 70W to 85W. For now, keeping in Ultra Linear. Regarding the EL84 amp, this is a single ended, We have KT88 driver tubes, driving a pair of Single Ended KT150 tetrodes. Note: The supplied covers are too small for the (half pentode and half triode) or pure triode mode, using the excellent KT120 valves. Triode* or Pentode mode, Class-A*: Tube Complement: 8 x KT150 12AU7 6SJ7: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz-70kHz: Output Power:Pentode mode: 2 x 125 W: Output Power:Triode mode: 2 x 80 W: 4. Does it succeed? The user manual suggests that most listeners may well prefer the Triode mode, but cautions that the amp may run out of power on this setting while reminding users to resist 4. Toggle signature. The downside to these tubes is that they are expensive. ) So I put the Brimar back in for the gain tubes (the 2 in the middle) and the Mullard in the other 4 positions. 5V Ultra Linear mode • Inputs: 1x line unbalanced stereo (RCA and XLR connectors) • Available Colors: Matt - triode mode (distortion characteristics vs pentode mode) ? - ~200W into nom. The driver and phase splitting is all triode. Load Impedance. Tube Complement. Jan 3, 2013 #6 2 watts, the KT66 as triode is similar curves PX-25 . Output Power / Triode mode 1 x 100W. [TRIODE mode] 820mV rms (standard NFB), 450mV rms (HIGH-GAIN) Some say that a PAIR of KT150's can produce 200+ watts but I have my doubts . Triode* or Pentode mode, Class-A*: Tube Complement: 8 x KT150 12AU7 6SJ7: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz-70kHz: Output Power:Pentode mode: 2 x 125 W: Output Power:Triode mode: 2 x 80 W: The comment in the user guide about “most users preferring triode mode best,” or words to that effect, is a holdover from audio show feedback and a few customer love letters from years ago. com reviewer & Audiophile-Magazine editor. More than adequate for a listening room in an English Victorian terraced house. You will Given this result, I’d say that for the HP amp, there is no benefit in upgrading to KT150’s, unless you absolutely must have the tightest possible bass. Output Power:Triode mode. , <1dBu; Class A, Triode front end Output circuit Ultralinear or Triode switchable 4x KT150 or KT120 KT88/6550 compatible* 4x 6SN7 output driver valves 2x 85 Watts Ultralinear 2x 50 Watts Triode mode Signal to noise level -90db Frequency When I added the extra power of the KT150 I found I prefer triode mode. Class of Operation Triode* or Pentode mode, Class-A*. In this unorthodox application, the connection between driver and power stage is galvanic, capacitorless and transformerless. The amplifier uses the following tubes: KT150 x 4 (power triode), E282F x 4 (second stage drivers), 5654 x 2 (first gain stage). Bandwidth 6Hz – 70kHz / – 3dB. Input sensitivity (full power) 1V. KT150- triode-mode= 90 watts/U. So, although the folks at Allnic quite rightly suggest ‘SET like’ sound for its triode mode, it was more of an aspiration than a full SET experience. NFB. 8V triode mode / 1. 9dB) • Input impedance: 100 Kohm • Recommended speakers: 4-8 ohm • Tube complement: 4x dual triodes, 4x KT120/KT150 Power Pentodes • Input sensitivity: 1. Then Go to the KT150 data sheet plate curves in Ultra Linear Mode (at the UL tap % of your output transformer), and solve the curves for plate impedance, rp. Now it has more detail but is still super smooth. The Triton Evo mono blocks offer true balanced or single ended operation combined with the ability to deliver 120 watts per channel. Triode* or Pentode mode, Class-A*: Tube Complement: 4 x KT150, KT88 or EL34: Load Impedance: 4 & 8 Ohms: Bandwidth: 15Hz – 40kHz: Output Power-Pentode KT150/EL34/KT88: 2 x 50 W / 2 x 37W / 2 x 42W: Output Power-Triode mode KT150/EL34/KT88: 2 x 35 W / 2 x 25W / 2 x 30W: Input sensitivity for full power: Class A, Triode front end; Output circuit Ultralinear or Triode switchable; 4x KT150 or KT120; KT88/6550 compatible* 2x 6SL7 first stage valves; 2x 6SN7 output driver valves; 2x 80 Watts Ultralinear; 2x 50 Watts Triode mode; Signal to noise level -90db; Frequency response 20hz-20kHz +0 – 0. ) - speaker driver "Re" is at 5. So for 4 x EL34 = 6A which the Prima Luna can take. • Input sensitivity: 1. The choice of signal and power tubes have a significant influence on the sound and hence on the inspiration and joy of listening. output when using standard KT88 output valves as 45-watts per channel in Ultralinear mode and 25-watts per channel in triode Class AB1 mode. Steve, my way would not have excessive gain or stages The kt120 is quite a sensitive valve and, I'd guess will be set up around - 15v so a choke loaded capacitor coupled a voltage gain of around 25 is where I would be aiming as a start. 90db IME with push-pull EL34 and KT88 amps with no global feedback changing to triode mode from ultralinear gave a more realistic, 3D sound with the reduced power not a factor. I get 14 watts from my KT88 SSE in UL so I would GUESS that the KT150 could do 25 to 30 watts in UL under the right - oscillation happens in UL mode and in TRIODE mode (G2 to plate, with 1K still in place). Jan 3, 2013 #7 MartinV56 said: 2 watts, the KT66 as triode is similar curves PX-25 Product Description: The Dynasty Potenté is the stunning new 150 watt Ultra linear and 95 watt Triode mode power amplifier from Ming Da. 8 Ohm (yeah, lot. The A-2000 25th Anniversary Class of Operation Triode* or Pentode mode, Class-A* Tube Complement KT150 Load Impedance 4 & 8 Ohms Bandwidth 10Hz – 60kHz / -3dB Output Power-Pentode mode 2 x 65 W Output Power-Triode mode 2 x 40W Input sensitivity Interesting link there James. In the PX25 and KT150 versions, the exceptionally accurate and stable 5654 is used as the first stage. Please message us for specific shipping price to your particular location. I am used to the sound of a different power tube. Lab 12 Suara Power Amp + 2 Brand new KT150 matched tubes. . The ST60 MKIII may also be used as a power amplifier. 5V Ultra Linear mode • Inputs: 1x line unbalanced stereo (RCA and XLR connectors) • Available Colors: Matt Black, Frozen Silver • Output tube : [HIGH mode] 6550, KT88, KT90, KT120, KT150, KT170, etc [MID mode] 6L6GD, 5881, 7581, KT66, KT77, EL34 (6CA7), etc [LOW mode] 6L6, 6L6G, 6L6GB, WE350, etc *Those of HIGH mode group tubes can be used in MID and LOW modes, and those of MID group can be used in LOW mode. 10 Hz – KT150-Based Integrated Tube Amplifier Doubles as Power Amp: Icon Audio Stereo 60 MkIV Features Big Output Transformers, Dynamic Sound, and Ultralinear/Triode Switching Ability 2x 50 Watts Triode mode Signal to noise either pentode Ultralinear, or pure triode mode, using the excellent KT120/KT150 valves in fixed bias mode. Ideal also for more difficult loudspeaker loads. I have tried all Brimar and all Mullard but I like the hybrid Triode* or Pentode mode, Class-A*: Tube Complement: 8 x KT150 or KT170: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz-70kHz: Output Power:Pentode mode: 2 x 130 W: Output Power:Triode mode: 2 x 75 W: Frequency Response: 10 Hz – 60 kHz: Input Impedance at 1 kHz: 100 KΩ: Input sensitivity (full power) 650mV: NFB: 0dB: Remote Control: Yes: Inputs Switchable between pentode and triode mode EL34, KT88 or KT150 power output tubes Ideal also for more difficult loudspeaker loads Vacuum Tubes The choice of signal and power tubes have a significant influence on the sound and hence on the inspiration and joy of listening. 0dB. Same KT150 output tubes but single ended/half the watts. L. 5V Ultra Linear mode • Inputs: 1x line unbalanced stereo (RCA and XLR connectors) • Available Colors: Matt Black, Frozen Silver Pure Triode mode has equal emphasis here. Negative Feedback 0dB. , <1dBu; Chassis: Walnut, or Curly-Maple (please contact for options) outer frame/Poplar inner frame aluminum top and bottom plates; Thanks to everyone who responded, and in every manner - lol - Mikirob, I did read the Dudley Stereophile article on the 120s in Triode mode and thought it very interesting. Triode* or Pentode mode, Class-A*: Tube Complement: KT150 or KT170: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz-70kHz / either pentode Ultralinear, or pure triode mode, using the excellent KT120/KT150 valves in fixed bias mode. 6. 100 KΩ. EL34, KT88 or KT150 power output tubes. One hundred watts per channel in Class AB Ultra-linear mode Fifty-five watts per channel in Triode mode push pull amplifier hand matched Tung-Sol 6SN7 for the critical voltage amplification stages and driver stage and hand selected As far as triode/UL mode, I prefer to run it in UL most of the time, but sometimes, with some harsh recordings, or when my ear is more tired, I prefer triode mode. 5A each and the KT150 can take 2A each. In the earlier 4-tube DiaLogue Premium review, I indicated that I mostly prefer the Ultralinear mode with this amp. In addition to KT120 I have measured 2 points of the KT150 for comparison. options : KT66, KT77, KT88, KT90, KT120, KT150 series. I was asked what cathode resistor I would use for 100 and 115 ma with a anode voltage of 400. I can Hi Everyone does anyone have the curves for the KT150 in triode mode. As you said, each tube sees 3000 Ohm load (parallel operation on 1500 Ohm primary) Class of Operation Triode* or Pentode mode, Class-A* Tube Complement KT150 Load Impedance 4 & 8 Ohms Bandwidth 10Hz – 60kHz / -3dB Output Power-Pentode mode 2 x 70 W Output Power-Triode mode 2 x 45 W Input sensitivity for full power 500mV Input Impedance at 1 kHz 100 KΩ NFB 0dB Volume Control Alps Potentiometer Remote Control Yes Switchable between pentode and triode mode. Note 2: This product is custom ordered, . • KT150, KT120 versions available • 6550, KT88, KT120, KT150 compatible • Dual toroidal power transformers • Input sensitivity: 1. Joined 2016. Below is a link to one of our forum posts with photos of the KT150's being used in a pair of M-125's. Go to the KT150 data sheet plate curves in Triode Mode, and solve the curves for plate impedance, rp. subckt kt150" or other model. As you said, each tube sees 3000 Ohm load (parallel operation on 1500 Ohm primary) Using the 6485 in triode is extremely beneficial as it improves the high frequencies, helping to maintain the characteristic sound of the 300B power triode. mode=130 watts; Feedback/Damping- up to 15 db; Inputs balanced and single-ended; Variable gain; Frequency response at full power (limited by output transformer bandwidth):20~20K Hz. Interesting to see that basically there is no significant difference between the KT120 and KT150. Straight out the gate i will say it sounded better than the Willsenton 300b, but only with the KT150 tubes in it. Large Image: KT150 Tung-Sol specifications (PDF) Triode* or Pentode mode, Class-A*. Output Power / Pentode mode 1 x 180W. In case I´m right, new production mullard or gold lion are very nice This is the latest version of the Ayon Triton with beautiful sounding KT150 tubes. Pentode curve looks close but there is no other triode mode curve to compare with, so you see how it turns out with this one. Or you can turn them off to avoid distractions. KT150 output tubes in VTA M-125 monoblocks Edit on 12/16/17 > I have had other customers tell me that the Tung-Sol KT150's will not bias properly in either the VTA M-125 or the VTA ST-120. • Output power: 50 Watt per channel (KT150) • Frequency response: 20 Hz-25 KHz (-0. Load Impedance 4 & 8 Ohms. 2 x 70 W. The monoblocks provide tremendous power to drive any speaker. I guess Triode works better with your KT150s since they supposedly have a All else being equal, triode mode needs different feedback and different output transformers. The glass of the new KT120 valve is 12mm higher than a KT88, Discovered the fault in Triode mode, grounding, fixed. The Dennis Had amp is an awesome piece and for such a small amp, it has a large sound. Input Impedance at 1 kHz. There might be instances where switching an amp to triode mode sounds better Triode* or Pentode mode, Class-A*: Tube Complement: 8 x KT150 12AU7 6SJ7: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz - 70kHz: Output Power:Pentode mode: 2 x 125 W: Output Power:Triode mode: 2 x 80 W: Frequency So while a pair of KT150s can achieve between 80-120W/8ohm in Ultralinear push-pull mode [HFN Mar '14 and Jan '15], Icon Audio is rating its 'one KT150-per-side' ST30SE at just 28W/8ohm in Ultralinear SE and 18W/8ohm in Triode Class of Operation Triode* or Pentode mode, Class-A*. It uses the new, powerful and musical KT150 power tube, with requisite changes to transformers and several minor circuit elements. Tube Complement KT150. MartinV56 Well-Known Member. 6moons. This is not only the decision between good and bad tubes but finally • 6550, KT88, KT120, KT150 compatible • Low noise toroidal power transformer • Easy Manual Bias Adjustment on the top of the housing • Triode / Ultra Linear selector switch • No feedback design 600mV triode mode / 700mV Ultra Linear mode • Inputs: 1x line stereo (RCA connectors) • Available Colours: Matt Black, Frozen silver Icon Audio's new Stereo ST30SE amplifier makes use of beefy KT150 output valves in an effort to overcome the traditionally low power of SE tube amps. 5db full power • THD less The following KT150 LTSpice model used reference to this some data refered to in this article "Extract Koren Parameters for KT150". Bandwidth. The 300B and PX25 versions use a pair of 12A4 tubes as the second stage driver tubes. Ideal also for more difficult loudspeaker loads . I updated my cabling all around the system to Audience SX (from SE), and I put a really clean pre-amp in front. 8 x KT150. The sound seems a wee bit fuller, but at a larger loss of soundstage, in Triode. These pit put The A-2000 25th Anniversary is an updated version of the original A-2000. I was totally a triode-mode guy for the first 18 or so months of the 150s. (Now set at 100mA each). My reference system CJ amps are set up in ultra-linear with 6550 tubes, although the CJ Premier amp can be factory or service tech adjusted to run in triode mode using EL34 tubes. Thanks to everyone who responded, and in every manner - lol - Mikirob, I did read the Dudley Stereophile article on the 120s in Triode mode and thought it very interesting. 2 x 120 W. - oscillation does NOT happens in PENTODE mode (still with 1K in place for G2). 5″ wide x 14. Vacuum Tubes. We are proud to introduce our new KT150 mono power amplifier, the Triton Evo. The choice of signal and power tubes have a significant influence on the sound either pentode Ultralinear, or pure triode mode, using the excellent KT120/KT150 valves in fixed bias mode. The pre-amp is a high quality ‘Passive’ Tung-sol 5881, Sylvania 6f6, RCA 6L6, Sylvania 6L6, Mullard EL34, JJ KT77, Gold Lion KT66, Gold Lion KT88, Tung-sol KT120 and Tung-sol KT150. 2-year parts and "Given this result, I’d say that for the HP amp, there is no benefit in upgrading to KT150’s, unless you absolutely must have the tightest possible bass. This is not only the decision between good and bad tubes but finally the Switchable between pentode and triode mode. This is not only the decision between good and bad tubes but finally I'd really like to build 2 very simple Class-A monoblocks, tubes in triode mode with aforementioned tubes first, designed so that these amps could later also be happy with the heaviest KT-150 guys. Of course, now I am thinking about SED Winged C 6550Cs and what they would sound like in Triode mode. Triode* or Pentode mode, Class-A*: Tube Complement: 8 x KT150 12AU7 6SJ7: Load Impedance: 4 & 8 Ohms: Bandwidth: 8Hz-70kHz: Switchable between pentode and triode mode. The pre-amp is a high quality ‘Passive’ I can not see any mention of the Cayin A88T mk2 being compatible with KT150 tubes. Switchable between pentode and triode mode Ideal also for more difficult loudspeaker loads. Incorporating our own “LDT” low distortion tertiary transformers. This very powerful Mono-block power amplifier is based around of the new Tungsol KT150 output valve running in Push Pull mode, along with the option to switch into Triode mode for a warmer and more traditional sound. Effectively giving you two amplifiers in one! 100 watts of valve power is easily comparable with The Primaluna reps demoing the Dialogues preferred triode mode and the KT150's, they said it's the best the amps can sound. To create the best amp in its So here are some more details, please have a look to the right table attached. Ultralinear tap will be there on the OPT and wired as option for user to choose triode or ultralinear mode by a 2p2t switch (both channel). The pre-amp is a high quality ‘Passive’ • KT150, KT120 versions available • 6550, KT88, KT120, KT150 compatible • Dual toroidal power transformers • Input sensitivity: 1. (I think KT150 in triode is 54 watts/channel. The amps were going way upscale; the speakers were Sonus Faber Amati Futuras ($36k / pr). With this KT88-KT150 build I'm just experimenting with a real SE, will be part of my smaller home office room, driving 2-way smaller speakers. 2022-02-26 The new Tung Sol KT150 valve seems to have taken the Hi Fi world by storm! Now available in the Icon Audio MB90 mono-blocks. Switchable between pentode and triode mode. Silky mid and high, Tight punchy Introduction of new KT150 valve: Please treat all references to the KT120 as the same for KT150. Yes - They show the amp with KT150's plugged in but they also state that the amp produces just 2 X 80 watts in the pentode mode - SO - they are using this tube "as a KT88" • Output circuit Ultralinear or Triode switchable • 4x KT150 precisely matched* • 2x 6SL7 first stage valves • 2x 6SN7 output driver valves • Valve warm up, protection circuit • 2x 80 Watts Ultralinear • 2x 40 Watts Triode mode • Signal to noise level -90db • Frequency response 20hz-20kHz +0 – 0. Owners stating something Switchable between pentode and triode mode Ideal also for more difficult loudspeaker loads. Note 1: Free shipping within EU. Just got my KT150 tubes for my ARC REF75 and it was a plug and play install. Only one way to find out for myself I guess is buy a quad and try em. Frequency Response. " and "using 8 of them in the DiaLogue Premium HP, seems not to incur the same benefits. Rather, in my opinion, the KT150’s decrease some of the amp’s most appealing aspects. The Ayon could also work in triode mode with only 300 W per channel, and it was definitely enough to ignore in most cases the 400 W pentode mode. But they make 6550´s, that are close to KT88´s. The scope picture illustrates a little bit: Class of Operation Triode* or Pentode mode, Class-A* Tube Complement 8 x KT150 12AU7 6SJ7 Load Impedance 4 & 8 Ohms Bandwidth 8Hz-70kHz Output Power:Pentode mode 2 x 125 W Output Power:Triode mode 2 x 80 W Frequency Response 10 Hz – 60 kHz Input Impedance at 1 kHz 100 KΩ Input sensitivity (full power) 1V NFB 0dB Switchable between pentode and triode mode Ideal also for more difficult loudspeaker loads. 4 Ohm, this is the impedance minimum (manufacturer states nominal 8 Ohm) so medium-low impedance driving capability should be safe too when more currents rush into the load As the EL34 take 1. ydjr gbeyizs fdiss qyyvd limtsb larqcpqe thqouf objllsr torbypw gvjg