Douk Audio HiFi Vacuum Tube 7-Band EQ Preamp Equalizer XLR Pre-Amplifier Home (T8 PRO)
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Availability:
In Stock.
Arrives
Wednesday, Aug 27
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Color: T8 PRO
Features
- Upgraded 7-band EQ preamp: separate and rich frequency band control (50Hz / 125Hz / 315Hz / 750Hz / 2KHz / 6KHz / 16KHz), T8 can compensate for the defects of speakers and sound field by adjusting 7-band high, middle and low frequencies, and modify various sound sources. The timbre and loudness also can be changed to achieve different sound effects.
- Real balanced XLR preamp: support XLR and RCA inputs and outputs, T8 can reproduce high-quality audio for amplifier or active speaker with excellent separation, resolution, sound field, clean background. Also with a balance control to compensate for the left and right channel of all outputs and prevent the sound field positioning from deviating from the center position.
- HiFi warm & sweet tube sound: adopts classic pluggable Soviet Union 6H1N-BN tube to improve everything detail associated with your music, sounds warm and delicate, full and mellow, dynamic and melodious. Pluggable socket design for tube rolling and sound-shaping, easy to pick from and alter the sound signature to one's preference.
- Advanced design and attractive appearance: adopts electrolytic iron plate with good shielding performance, and the performance is precisely balanced; black aluminum alloy chassis with vintage warm tube lights, looks cool, exquisite and durable, very suitable for the audiophiles who pursue HiFi sound.
- It features dual RCA/XLR outputs, neutral frequency settings at the midpoint of the knobs, and is equipped with default 6H1N-BN tubes that can be interchanged with models like 12AU7, ECC85, 6SN7GT, 6N1, or 6AQ8 for enhanced audio performance.
Brand: Douk Audio
Color: T8 PRO
Compatible Devices: TV, CD Player, PC, Active Speakers, Amplifier
Material: Metal
Product Dimensions: 5.04"D x 7.32"W x 1.5"H
Product Dimensions: 5.04 x 7.32 x 1.5 inches
Item Weight: 1.51 pounds
Manufacturer: Douk Audio
Country of Origin: China
Item model number: SUC-T8-PRO-H
Date First Available: May 18, 2023
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If you place your order now, the estimated arrival date for this product is:
Wednesday, Aug 27
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View our full returns policy here.
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Top Amazon Reviews
I've had the T8 Pro for a number of weeks now and through a series of fortunate events have ended up with a second, so now I'm lucky enough to have both a silver and black model which I've been using to experiment with tube rolling (makes A/B testing incredibly convenient). I'd like to first address what I consider to be the sole con of this device which is the ever so slight reduction in clarity. I think this is just about a given in cheap preamps/equalizers, especially tube based models. I have a relatively high end DAC (Geshelli Labs J2 Socketed with the AK4499 DAC chip) and frankly I was expecting a bit more in terms of the hit in clarity. Overall, it's a very minor veiling and it doesn't really affect my enjoyment of my music. Now on to the pros which I believe are myriad. First is the fact that not only does this EQ have balanced inputs and outputs, but it does both XLR to RCA conversion and vice versa. I find these features to be pretty much non existent in gear this inexpensive. I currently mostly use the XLR input, but I've experimented with this feature and it works very well. Build quality is very nice with a solid metal chassis and suitable heft for a device this size. The 7 bands of the EQ are very nicely spaced out and I have no problem modeling the sound precisely as I like quickly and easily. If you're contemplating between the T8 and T8 Pro, it's a no brainer, get the T8 Pro. The two extra bands of EQ are far more valuable than the headphone amp included in the standard T8 unless one is on a tight budget and really wants an integrated headphone amp. I've heard the headphone amp isn't very good and I'm likely to believe that considering how much hardware for the money is already included. The difference in price between the two is negligible and now with coupon, the T8 Pro is actually cheaper. The EQ does provide gain and it does so very cleanly. I rarely push the volume beyond the 12 o'clock position, but when I do, it can feed plenty of gain to my amplifier and it does so with zero distortion that I can notice. Now for my favorite feature of this EQ: the tubes! The included 6H1N-BN tubes impart a very pleasant tube warmth to my Archel 2.5XL amp. I loved the sound of this amp before, but this EQ was the missing link that I was searching for. Lastly is the ability for not only tube rolling, but OP amp rolling as well. I've tried a set of 12au7 tubes so far and I found that they provide an even more euphonic character to an already very sweet sounding system. You can pick up a gain matched pair for around $60, and while that is about 50% of the cost of this EQ, I can say it's a fairly solid upgrade to an already very solid EQ. I haven't experimented with op amp rolling as of yet, but there are 5 dip-8 sockets by my count, so I'm looking forward to playing around with that as well. There are plenty of op amps ranging from a few bucks a piece to around $100 a piece, so this unit seems to be very upgradable. I haven't experimented with linear power supplies either, but I imagine that's another possible sonic upgrade to look forward to in the future. Overall, I am extremely impressed with this EQ. It's cheap, yet very solidly constructed, does exactly what it says it does and offers much in terms of user customization. Frankly, I'm fairly puzzled by the somewhat average reviews for this as I consider it to be an absolutely incredible value. I'm a big fan of Schiit products, but the Loki and the Lokius don't offer the functionality or that sweet tube character of the T8 Pro. The Loki isn't balanced and offers only a paltry 4 bands of equalization. The Lokius is balanced, but around 3x the price of the T8 Pro and still only has 6 bands of EQ. These are both nice units, but I can say assuredly that I prefer the T8 Pro. I really think you need to step up to one of the Freyas at several times the price before you get superior sound and customization to the T8 Pro. If you're looking for an equalizer, especially one that is tube based or which offers balanced inputs and outputs, don't sleep on this deal. I really couldn't be much happier with it.
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Reviewed in the United States on November 8, 2023 by Amazon Customer Amazon Customer
This thing is awesome. Tubes are probably a sham, despite them running off a hot-ass tube heater, as the unit itself runs off only 12V. But the EQ is fantastic and has been a great, cheap way to fix my setup. Doesn't seem to degrade the signal, but can't say for certain. Users should be aware that the input sensitivity is pretty low (listed at 0.78VRMS on the product page) -- I'll sometimes have to attenuate my preamp's signal ahead of the chain to avoid clipping. Using HouseCurve (off the iOS store, excellent free and paid options) with the T8 Pro, I've been able to flatten the FR of my living room set up (DAC/preamp > T8 Pro > Sony 2-ch/TubeCube 7 > Technics SB-LX70). FWIW, I'd imagine headphones might be harder to fix unless you have a measurement rig or just want to add in a bass or treble boost, as its hard to tell the Q factor of the filters and their interactions with each other, and having to switch filters manually each time would be a pain. Would be great to see a solid-state, no frills, version of this product, as well as a full-functioning tube or tube-hybrid version.
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Reviewed in the United States on May 25, 2025 by yourmom210 yourmom210
Way better sound than the previous, non-pro, model T8 EQ. I swapped this out with the previous model and could tell an instant sound improvement and I hadn’t even dialed the bands in yet. Not only more frequency bands on the new model, but more meaningful frequencies. Much better bass response, better control of “muddiness” bands, and better mids.
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Reviewed in the United States on May 18, 2025 by GK
I got this unit to add to the Fosse audio, dedicated, subwoofer with left and right. It made the left and right speakers sound a lot better., but as far as the base goes, it took the deep rumble away by 20% and made it sound more punchy and hollow. I cannot recommend this if you’re looking for deep Rich Lows.. if you like punchy hollow bass then this is perfect, I hooked it up to an 18 inch subwoofer and it just doesn’t work properly with it. Return this for a different preamp.. Side note, I also paired this with a different fosse audio that only has subwoofer hook up and it did clean that up a little bit and gave it more of a low rumble , but I’m using it for it so it might be good for other set ups just not the one I’m using at this moment.. But even when paired with the standalone subwoofer hook up, that made it sound better it still wasn’t as good as the other fosse unit by itself.
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Reviewed in the United States on July 11, 2024 by beecakes beecakes
I bought 2 of these after seeing several good reviews on this product. I connected one of them, and without making any adjustments, keeping all settings to baseline balanced. Works as expected. I would purchase again. PEOPLE NEED TO REALIZE THAT Douk Audio T8 PRO EQ 50hz - 16kz IS BEST FOR MUSIC! Just gets by with movies. Not real impactful for movies. It doesn't allow you to adjust (boost/cut) lower frequencies below 50hz. The Douk Audio T7 EQ is an 8 band EQ 64hz - 8kz. I would recommend this model more for instrumental jazz, blues, acoustic, and vocal tracks. Great to pair up with a headphone amp! I would recommend the Nobsound EQ 9 (20hz - 16kz) 9 band equalizer for Music, and Movies. I own 2 of each of the models listed above. I recommend them all. They are all solidly made. They all have upgradable op-amps. There are 5 upgradable op amps installed in the Douk Audio T8 PRO. They are JRC 2068D (CO84A). I believe these to be Japan Radio Corp. Dual op-amps. If so, should be compatible with Sparkos SS3602 Dual discrete Op amps. To accommodate the Sparkos SS2590 Pro Discrete Audio Op Amps, or the Burson V7 Vivid Op amps you would need to modify the casing and possible need risers for the Sparkos Pro SS2590. THIS WOULD VOID ANY WARRANTY ON THE Douk Audio T8 PRO.
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Reviewed in the United States on July 19, 2024 by Deloris M.