DOGE 10 is an awesome KT88 push-pull delivering 60W RMS.
“Best bang for the bucks” (Thomas & Stereo). Watch the review below.
PADC in “Doge 10 PADC” name stands for “Precision Autobias with Dual Class (A/AB)”.
Our customers who already own this amplifier gave us so much positive feedbacks and comparison with other brands they previously owned, that we consider it regarding customer’s reviews, as one of the best-integrated tube amplifiers on the market for its price. You might find some KT88 amps from China at $1099, sometimes even $899 without remote, sometimes with a pretty good appearance,… but none will offer such sound performance, so many features, and last but not least, such reliability as Doge 10. Our Doge 10 compares favorably with amps in the range of $3000 to $6000.
Please note that from 2014 to 2019 we sold under the model name ‘Doge PD88’. So you might find reviews on forums or blogs under that name.
DOGE 10 deserves the best speakers…
By respect for our competitors, we don’t quote the name of the amps it exceeds the performance.
Because our price is not only because we price more fairly than our competitors, it is also because of our system of direct distribution to you. Our competitors have to give profit margin to their distributors who promote them in exhibitions and visit regularly the retailers and of course to retailers who need profit margin to buy demo units.
We recommend you to match Doge 10 with Doge 7 who got the Best 2020 DAC award!!
The Doge 7 coupled with a tube amp has something unrealistic, magical…
Doge 10 come with awesome comprehensive features
- Doge PAB (Precision Auto-Bias) a computer-manager autobias
- Doge DUAL CLASS mode, a computer-managed feature to switch from class AB to true Class A
- Doge FLS (Feedback Loop Selector) for better speaker matching
- Doge APM (Auto Protection Mode) to shutdown automatically the amp and protect your speakers if something wrong happens inside the amp.
- Doge DTI (Dead Tube Indicator)
- A sophisticated Soft-Start
- A Ground Noise Reduction switch
- A comprehensive remote in an elegant single piece aluminum
- Turn-on/turn-off function from the remote controller. Very convenient
Doge 10 is a KT88 push-pull integrated amplifier. it can be used with 6550 as well. However, it can’t use the KT150, and KT170 tubes. It can use the KT120 from Shuguang or Psvane but the Russian KT120s from Tungsol have an extremely high rate of defective tubes with unstable impedance and most of Tungsol KT120 will be recognized as defective by our DTI, so our processor will block them to preserve the safety of Doge 10.
It can deliver 60 Watts RMS per channel in class AB and it goes to 30W in class A. Most of you probably know that true class A has less efficiency in counterpart it improves the sound performance.
To sum up, the Doge 10 design concept, is we wanted to put the best of our technology and put in the best components, most of them imported. First of all, the key component is a pair of very high standard output transformers with high range Z10 core steel. Definitely, you can’t have a high-end amp without premium-grade output transformers. For other components we use Nippon Chemicon electrolytic capacitors, Japanese potentiometer ALPS “blue velvet” matched at 1% precision, German OMRON gold plated relays,… And last but not least, you would be surprised if you were comparing the signal cable we use and those of well-known brands. Our signal cable is a very expensive silver-PTFE with shielding. We put attention to any single detail, like shielding even the inputs board with the relays.
In any amplifier, a key component is the coupling capacitor as the signal pass through it. As a practical example of components quality range, for coupling capacitors, we moved to the UK brand ClarityCaps, ESA type, that we use for two years on our multi-awarded DOGE 8 Clarity preamp.
DUAL CLASS MODE
We are proud to have introduced on the tube amps market in 2014 a totally new technology, the “Dual Class mode”. This is an exclusive feature of DOGE. Believe it or not, you really can’t find anywhere else worldwide !! 😎
After the launch in 2011 of our patented Doge PAB Autobias, our microprocessor is now able to manage different levels of voltage and anode current. With Doge 10, you will be able to choose between class A and class AB within the same amplifier. It is really like having two amplifiers in one, making it very versatile for different types of speakers and even music.
What is really different with Doge DUAL CLASS mode, compared with what you can read on our competitors’ websites, is that our class A is not what others call “floating class A”, which says for example their amp is in class A between 0 to 10W and then class B from 10W to 50W, etc…
Such descriptions are for marketing purposes because an amplifier is either in class A or not. Period. True class A must have a very high anode current going through the tubes, whether you are at minimum power or maximum power. That’s the reason in class A we have programmed our microprocessor to set the anode current at the high value of 80mA to deliver a true class A with only 0.06% distortion, which is extremely low and extremely rare for a tube amp. For reference, 95% of KT88 amps have anode current from 30mA to 55mA. To be able to supply this high current to the tubes, the PADC microprocessor changes the main power voltage and the anode current (in class AB we have 50mA which is already in the highest standards). This is a process that requires around 45 seconds. That’s the reason only Doge 10 can say it is at the same time true class A and class AB, because you can’t use both at the same time.
To be more practical as ampers are not familiar to most of you, in class AB the KT88 tubes get a 520V anode voltage, whereas in class A the KT88 tubes get a 460V anode voltage because it couldn’t have at the same time a high voltage and high current, which is the reason the max power is limited at 30W in class A. But you will be probably very surprised how these 30W sound like higher power because its very holographic sound.
Now some of you might think “why not do class A only if class A is a must?” Well, it is not that simple. Because class A in a push-pull design will have less distortion it might sound slightly less warm and, depending on everyone’s ears or tastes, some will prefer this lower distortion sound as very pure and neutral and some will prefer class AB, very “tubish” style. For some orchestral performance or live performance, depending on tastes and systems, class AB might sound better. On voices, class A might sound better. Finally, depending on your style of music and personal taste you might like one class better and this class might not be the same for everyone, as everyone taste is different and you, only, can decide which one you prefer and you might sometimes be willing to change according to the style of music you listen.
We really make our best to make Doge 10 be one of the most versatile tube amp ever made, as something you never saw before. We didn’t even want to give this PADC feature to LUA as it is really “our baby” and knowing you can see it only on Doge and if some of you might think we are the ones who clone our OEM partner designs, it is the evidence all amplifiers manufactured by Doge, either on Doge brand or LUA brand are designed by Doge only (though a few customizations asked by LUA).
What about the reliability of using a microprocessor in a tube amp?
Since we launched our first generation of Autobias in mid-2011, we have never had any break-down of our microprocessor, which is a very well-proven STT unit (ST Microelectronics-Thomson).
If you want to take a break before going further into technical explanations, you can watch Doge 10 in one of our customer’s systems. We think interesting to show you this video as at least 5 customers reported to us an awesome match between Doge 10 and the Tekton speakers we have no idea technically why, but in case you need to buy new speakers as well, you can’t be wrong with matching Doge 10 with Tekton’s (and we have no commission on Tekton sales 🙂 )
Any designer would have stopped here, but we still wanted more! So we created the FLS (Feedback Loop selector) function. Although you find now this feature and a few other brands (really just a few), we were among the firsts to do it if not the first. Almost all amplifiers have a negative feedback loop, which in two words means the amplifier re-inject a little part of the output signal into the input stage to make it more stable. In the 60’s this was considered as an improvement. But after some years have passed, many audiophiles consider the “zero feedback” as “the nirvana”, but this kind of electronic diagram requires ultra-stable speakers as it lowers the damping factor. Our point of view is we don’t know which speakers will be used with our Doge 10, so we preferred to do a design it with a feedback loop, but to let the user the choice of the strength of this feedback loop.
We offer three choices, normal, medium, and low. Normal is what you find in most amplifiers on the market, whereas “low mode” is close to the zero feedback loop’s amps. This choice is to make upon your taste after listening, and “low” mode still keeps a little feedback to keep the amplifier stable and good damping factor.
THE POWER STAGE
A good amplifier starts with a good power section.
To supply the correct amount of power in particular in class A, we use a huge power transformer and a “Pi filtering” with a huge choke of 1H/1A.
A “Pi” filtering is an association of an electrolytic capacitor, followed by a choke for filtering and a second electrolytic capacitor. On Doge 10 we have 500µF before and 500µF after the choke, so a total of 1,000µF !! It is an incredible source of energy. You will have in the same time a super silent power and firm and incredible basses even at Pmax
A big choke can have a cost similar to a transformer, in particular, if like us, you use premium Z10 core steel. That’s the reason many manufacturers in the low or medium range, don’t use choke or make it very small. To make an explanation by image, we have chosen the internal picture from the integrated of a brand worldwide famous at $3,590. You can see the difference in size and construction quality of their choke, no need to add other explanations. To avoid any scale trick we have circled the ALPS potentiometer as we share this same component to show we use the same scale on both photos.
Making this explanation we don’t intend do mean that amps without choke have bad sound (we don’t make secret we don’t use on our Doge 5 at $1K, for example, to make it more affordable), and that doesn’t mean either that amps with smaller choke have necessarily bad sound, but, we wanted to point out we really put very high quality and expensive components inside Doge 10 and its smart design combined with high range components both together make an incredible sound! it is also visible on the scale with 29Kg unpacked.
Compared to our first generation of PAB Autobias from 2011, we have put all the tubes LEDs on the front panel in order to make that the tube sockets area doesn’t look like a “Christmas tree”, and instead, we put a nice anodized aluminum plate. So everything can be controlled from the front panel.
We offer as an option (many of you want to see the tube), a sophisticated protection cage which holds with strong magnets (enough strength for kids’ hands) so the appearance is elegant no visible holes on the chassis and no screws on the grid.
It has a very holographic sound stage, we could say a 3D sound stage. It’s ultra-low distortion rate makes that you can listen for hours without feeling tired. The basses are particularly firm and dynamic.
WHAT ABOUT ITS VALUE?
We want to let you know that the Doge 10 has been tested in the German STEREO magazine under model name LUA Sinfonia at $6500. It got the mark of 92% and 4 stars for price value. You might think, and that would make sense, that probably this model shares the same schematics with the Doge 10 but certainly, the German partner put higher range components in it?
The LUA Sinfonia uses very reliable, but industrial, Wima coupling capacitors whereas our audiophiles grade UK Claritycaps are 10 times the price of the Wimas. You can also note the number of connectors required by Mr. Lua whereas our Doge 10 use soldering only for perfect conduction and avoid any loose contact. We want clearly claim our own brand DOGE products are higher standards than our OEM German products. And you can understand why Doge 10 is a true bargain compared to the 5900€ of the Sinfonia!
With NOS tubes worth $2500 that you can buy by yourself for cheaper it was ranked 95%
We are fully aware that considering the German price we could have price Doge 10 at higher level. We really first wanted you to enjoy it. It might be in coming months we slightly increase its price, but it will be no more than a hundred dollars.
Doge 10 is supplied with the following stock tubes:
KT88: Psvane KT88-C. It can be moved with no price change to Shuguang 6550B (please see the picture), which would bring a bit more warmth.
12AT7 and 12AX7: Shuguang first grade with Doge additional QC
If you want the 6550B, just at check-out put in the “comments” field: “please supply 6550B”. Please note with 6550B, Pmax will be limited to 55W. Because of its smaller glass, it has less heat dissipation.
OPTIONAL FACTORY TUBE UPGRADES :
PSVANE TII UPGRADE
4 x KT88-TII Grade A (“best 10%”)
2 x Psvane 12AX7-S (left-hand side image)
2 x Psvane 12AT7-TII (left-hand side image)
2 x Shuguang 12AX7-T (right-hand side image)
2 x Shuguang 12AT7-T (right-hand side image)
Please note we supply the KT88-TII grade A called “first 10%”, which is a sorted selection grade of the best 10% measurement tube curves (Volts/Ampers) and not same grade you find on Ebay everywhere and cost 15% more We sell this option almost at cost as we have the right to do it only if shipped in the same time as Doge 10. For packing reasons, we can’t supply the gift box as there is not enough space in our carton. If you really wish it we need to make a separate carton and it will increase the price of $35 including extra handling time, extra carton and extra shipping weight. It is absolutely not any saving about the gift box itself as Psvane remove just $3 not to supply this box you imagine we are not greedy at that point 😀
> Factory-direct price: once you will have checked-out (without need to register) you will fill your country and see our total price with includes delivery to your front door, Paypal or CC fees, and one year warranty served in your country. If you pay by bank transfer you will get 4% discount as our bank doesn’t charge us any fees (use coupon code “bank”). Possible taxes in your country are at your charge.
Please note that for safety reasons according to international air freight regulations, remote controllers are not supplied with batteries. We use AA type batteries. Please plan to purchase some prior to the delivery.