SKU: 40737318689

Dartzeel CTH-8550 MkII Integrated Amplifier

$34492.50 $38325.00
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Description

Dartzeel CTH-8550 MkII Integrated AmplifierCTH 8550 MkII Traditional thinking suggests that when looking to go all out in a quest for ultimate sound quality, the only choice is to stay with a separate preamplifier and power amplifier(s). However in recent years, darTZeel has turned that thinking on its head with the release of the CTH 8550 MkII integrated amplifier. This is a no compromise, dual mono design, including separate channel windings from both toroidal transformers. With its 50 ohm

CTH-8550 MkII

Traditional thinking suggests that when looking to go all out in a quest for ultimate sound quality, the only choice is to stay with a separate preamplifier and power amplifier(s). However in recent years, darTZeel has turned that thinking on its head with the release of the CTH-8550 MkII integrated amplifier.

This is a no compromise, dual-mono design, including separate channel windings from both toroidal transformers. With its 50-ohm Zeel inputs, optional high-quality phono stages, all sources including turntables are accommodated. The darTZeel CTH-8550 is equipped with a plasma control panel, offering excellent contrast when viewed from any angle. A range of menus allows you to individually configure all settings for each input source.

The quality and design of the volume control is paramount to the sonic performance of an integrated amplifier and in the case of the CHT-8550 MkII, that is handled by an optical encoder notched magnetically, for unrivalled touch and precision.

However, as much as we invite you to peruse the specifications and technology, this amplifier is all about digging out the emotional expression in music. This is where the darTZeel sound separates itself from virtually all other brands, with a musicality, liquidity and flow that is a benchmark for integrated amplifiers around the world. Keep listening, and you will also hear immense detail & resolution, slam, grip and natural tonality. Unbelievable.

The creator of darTZeel instruments Hervé Delétraz infuses his sense of humour into his creations. The volume control is labelled the ‘Pleasure Control’ and in our experience, it sure is! This amplifier has an uncanny sense of communicating the heart of the musical message and ultimately, that is why music lovers and audiophiles pursue the hobby of music reproduction.

It is beyond a simple ‘recommendation’, we say that if you want the ultimate integrated amplifier experience, you simply MUST audition this beauty. Enjoyment guaranteed.

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Reviews

Hi-Fi+, Chris Thomas, 2021

Forget the debate about tubes v solid state. Amplifiers like the darTZeel transcend such things. Some amplifiers are just really, really good to listen to. It’s as simple as that. It surely has to do something with the ‘voices’ the amplifier can convey to us and musical tales they tell. It is harmonically rich, very clean, crazily textured and able to resolve everything from micro to large scale dynamics plus it is immaculately seated timing-wise, which is crucial. You don’t need constant examination and evaluation. It would be way too crass. The system just lives and breathes atmosphere. That’s what we have here. The CTH-8550 MkII is a wonderful amplifier because it brings you face to face with the art form called music, and you won’t find how it does it on any spec sheet. You just listen, get involved, and give it your trust. If you love music for its form and emotional power, the darTZeel will thrill you. I love it.

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The Sound Advocate, Howard Milstein, 2021

The amplifier manages to establish a full-size surge of musical dynamism -that being the variation in loudness between notes being one of its most special virtues. It has a huge, 3 dimensional open sound while still maintaining the most absolute stereo locational effects of the program sources it displays… this is an amplifier that can initiate and reproduce a remarkable scope of the music and sound that emanates before you. Recognizing the above, the darTZeel in most cases will bring many audiophiles to a supreme state of musical heaven.! It simply is an amplifier that begs you to keep listening to the music of your choice, forgetting everything else going on, while only having to reach for another piece of source material to continue on the fantastic voyage.

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Part-Time Audiophile, Rafe Arnott, 2016

Whenever I got someone to dismiss sticker-shock from the equation, and talk to me about the amplifier’s merits based solely on performance after hearing it in my system, they spoke of musicality, and how right it sounded regardless of the genre it was tasked with playing… the 8550 as something that brings people together – as it did in my home – to enjoy the experience of fantastic music playback… musically, the 8550 is a sonic knockout, full stop.

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Stereophile, Wes Phillips, 2009

We proponents of the High End are fond of citing “intangibles” such as pride of ownership and the satisfaction of knowing you own The Best. These are real and quite considerable—and the darTZeel CTH-8550 delivers them in spades. It is a genre-defining product: a contender for The Best by anyone’s definition of the term….It was about as transparent a window onto recordings as I have ever heard… I was floored by the CTH-8550’s quality, performance, and convenience. It is a dream component.

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Product Specification

Type Integrated amplifier
Nominal Output Power 200 watts RMS (230 watts peak) @ 8 ohms
330 watts RMS (360 watts peak) @ 4 ohms
400 watts RMS (500 watts peak) @ 2 ohms (software limited)
Line Gain 0 dB nominal, up to + 12 dB (+22 dB custom)
Power Stage Gain 26 dB @ 8 ohms
Analog Input Impedances 1 x Zeel BNC 50 ohms
1 x RCA line > 30 kohms
1 x XLR > 30 kohms

Optional Phonos:
Phono MM = 47 kohms. Neumann RIAA 4th pole included
Phono MC = 1 kohms. Neumann RIAA 4th pole included
Line Output Impedances RCA = 75 ohms, darT BNC = 50 ohms
Speaker Output Impedance < 0.33 ohms from 20 Hz to 20 kHz (measured under 8 ohms)
Frequency Response 2 Hz – 200 kHz, +0, -3 dB
Rise Time < 0.8 µs
Slew Rate > 88 V/µs, peak-peak
DC Output Voltage < ± 15 mV max
Total Harmonic Distortion (THD) < 1 % from 7 Hz to 77 kHz within the output dynamic range
Temporal Distortion None, at any level and load, as specified above
Crosstalk < – 90 dB from 20Hz to 20kHz
Signal to noise ratio > 115 dB (A) @ nominal power
Power consumption 3 watts Standby, 40 watts @ idle, 1,000 watts @ maximum output power
Dimensions in mm 440 (W) x 350 (D) x 170 (H)
Total depth with handles: 415mm
Dimensions in inches 17.32 (W) x 13.78 (D) x 6.7 (H)
Total depth with handles: 16.4 inches.
Net weight 28kg (61.7lbs)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40737318689

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4.2 ★★★★★
Based on 25 reviews
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Product Reviews
K
Kat
West Palm Beach, US
★★★★★ 5
Great idea!
Size: 30M
Love the idea of these! Every year it’s such a pain to put up holiday lights that I avoid doing it until the last minute or at all (especially when the weather is yucky…). And I admittedly didn’t get these permanent outdoor lights installed before the holidays as originally planned, so can only speak to the functioning of the lights. I did test the lights and the app -- both functioned well and are easy to set up. I really like that the lights can be put on a timer via the app. Great light color choices as well. Very vibrant. When the weather warms up, I’ll be installing the lights permanently, and REALLY love that I can just keep them up year-round for Christmas, Valentines, Halloween, etc., as well as general every day use. I’ll update this review if installation is a problem, but I am pleased so far with these permanent outdoor lights.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2025
A
Amazon Customer
Alexandria, US
★★★★★ 5
Versatile Room Divider With Easy Assembly and Strong Coverage
Size: 3 Panel 12FT W
I picked up this Siebwin 3-panel folding room divider mainly for privacy and room separation, and overall it works very well. Assembly is very straightforward, and the divider can be set up, taken apart, and stored without much effort. The fabric quality feels good, and the frame construction is stronger and more stable than expected. The support tubes especially feel well built and help keep the divider standing securely. One feature I really liked is the flexibility of the design. The panels can be used together as a complete divider or separated depending on the setup and available space. That makes it much more versatile for different room layouts or temporary privacy needs. The coverage is also very good, and the size matches the manufacturer’s description accurately. The fabric blocks light and background visibility well enough to provide solid privacy without feeling overly heavy. The wider feet also help improve stability compared to thinner folding dividers. Another positive detail is that everything arrived complete with no missing parts or damaged pieces, which made assembly much easier and faster. Compared to cheaper privacy screens, this one feels more durable and easier to customize depending on the situation. In terms of value for the money, it feels like a very practical and worthwhile purchase considering the size, flexibility, and build quality. Overall, a versatile and well-built room divider with easy assembly, strong privacy coverage, stable construction, complete included parts, flexible panel configuration, and excellent everyday functionality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
F
Fred
Bozeman, US
★★★★★ 5
Stable, flexible in deployment configuration, creates true privacy and looks great.
Size: 3 Panel 12FT W
This is the second room divider panel I have installed, and there are several features about this one that I like much better than my older one. The fact that there are no gaps and that the material is thicker means you get more privacy or more hiding power, if you wish. My older divider has vertical spaces between each of the panels and the panels are half as wide as the Siebwin panels, so there are many vertical spaces. The Siebwin divider really creates privacy. Another feature that I really appreciate is that the legs are wider and stand off from the floor. On my older one the legs are flat and they're rather awkward to adjust because they create more drag on the floor. The feet on the older one also loosen if you turn them counter clockwise, so adjustments of configuration that require the feet to be moved are more complex. The older divider also must be deployed in a zig-zag fashion because he feet are not as wide, but this new one can be deployed and stable in a straight, an "N" shape or an arc. They are both the same length, but because the older one must be use in a zig-zag deployment it doesn't reach to the length of the new one. The Siebwin divider definitely costs more at $103.48, but it sports several features and advantages over the other brand, so it does a better job and is worth the extra cost.
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Reviewed in the United States on May 25, 2026
C
Computer
Dallas, US
★★★★★ 4
Easy to assemble, does the job, material is shiny nylon and shows creases, minor defects, sloppy
Size: 3 Panel 12FT W, Size: 3 Panel 12FT W
The Siebwin room divider is a good idea, and for the price, it mostly delivers on the intended functionality. I ordered the 12 foot, 3-panel version mainly to hide an unfinished basement storage area that had become an eyesore. It works well for that purpose and gives the space a cleaner appearance without spending the kind of money that more decorative dividers or custom partitions cost. If you need something temporary, portable, or mainly functional, this is a viable option. There are a few limitations that became obvious during setup and use. The first thing I noticed was that the weld quality on some of the metal poles is fairly sloppy. Once the cover is installed, you do not really see it, but up close, it does not look especially refined or professional. The blackout material also is not a matte canvas style fabric as I expected. It has more of a shiny nylon appearance, and the creases are fairly visible. Being that it’s more of a nylon, I’d be hesitant to try steaming it to remove the creases. However, the creases do not matter if you are using it in a basement, dorm, or shared room, but for photography, video work, or a professional office setting, the appearance could be disappointing. The fabric is thick enough, though. It blocks visibility well enough, but strong light behind it still shows through to some extent, nothing deal-breaking. Also, my fabric appeared to be slightly defective. The hook and loop strip on one of the bottom sections was off-center and couldn't be totally attached because it was lined up with one of the legs. I originally hoped to use this as a video backdrop, but I will probably end up replacing the fabric with a proper green screen or canvas material while continuing to use the frame itself. For now, it does a good job of covering my basement junk. Assembly was actually easier than I expected and took roughly 15 to 20 minutes. The longer vertical poles are tethered together similarly to tent poles, which made setup straightforward and fairly intuitive. The shorter horizontal pieces slide and snap together to the top and bottom of the vertical assembly. After each section is assembled, the divider panels connect together with metal plates and two knurled screws (at the top and bottom), so no tools are really required. A few screws were difficult to start because paint had gotten into the threads, but once they caught, they tightened down normally. The feet install with similar knurled fasteners and help keep the divider reasonably stable. One thing to watch for during setup is the fabric orientation. There is one arrow indicator in the middle of the fabric to indicate up. However, if you need another indicator, the smaller hook and loop strip goes on the bottom while the longer strip goes on top. I realized mine was upside down right before finishing and had to redo it. I wasn't difficult to redo, despite the defect in mine. The overall design is practical and easy to move around. I do like that the panels can fold and bend into different shapes depending on the space. The widened feet help stability, although when trying to stretch the fabric tight, I noticed the poles sometimes wanted to overlap slightly at the joints. Tightening everything helped somewhat, but it still happened occasionally. The divider feels adequate for normal indoor use, though I would not expect premium durability or luxury-level fit and finish at this price point. The entire device can also be easily disabled and stored in a tote if you need it completely out of the way. It comes with assembly instructions, but even if you didn’t have them, it’s easy to build without them (save a mistake or two). In terms of value, I think the Siebwin divider mostly matches its price. Around $100 gets you a large freestanding partition with decent usability and easy assembly, but there are compromises in materials, appearance, and refinement. The defects are also off-putting, but hopefully you won't have them. Higher-end room dividers can easily cost two or three times more, so some of the tradeoffs are expected. I also noticed cheaper alternatives online, but based on the quality here, I suspect those would probably have even more issues. For practical home use, temporary privacy, hiding storage areas, or separating shared spaces, this is a good option as long as expectations stay realistic.
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Reviewed in the United States on May 18, 2026
T
Trendy Tales
Cuba, US
★★★★★ 3
Works well but takes up more space than expected
Size: 2 Panel 8FT W, Size: 2 Panel 8FT W
This room divider does the job for creating a little extra privacy and was easy enough to set up. The panels feel decent quality and the wider feet help keep it more stable than some cheaper screens I’ve tried. My only issue is that it takes up a bit more room than I expected, especially with the feet sticking out. It’s still portable and folds away nicely, but definitely measure your space first. Overall it works well for separating a room or blocking off an area temporarily. i wish it came in other colors
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

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