I’m looking for an sleek integrated amp under $15k

But as the football guy says, Mola Mola beats everything unless you want to really increase your price range. Funny how so many things supposedly sound better when they’re more expensive. Silly humans and their expectation bias.

The Mola Mola Makua (a preamp I was strongly considering) and is supposed to be a neutral unit that measures amazingly. I figured I should try the Benchmark LA4 for the same result at a much cheaper price. Glad I did that.

Mola Mola Class D amps are ancient technology. These are the $16k amps I am referring too.

The DAC in the Makua was first designed around 2006, about 5 or 6 years later that DAC module became the Tambaqui DAC. Then Bruno left for Purifi.

@disc I think you’re right I thought the depth was 18.6” but it’s 16.6 so it may work. 

highly recomend the Pathos Kratos Tube Hybrid Integrated Amplifier.  Beautiful craftmanship and incredible sound quality! One for sale below for 8K

Pathos Kratos Tube Hybrid Integrated Amplifier – Upscale Audio

Pathos Acoustics Kratos For Sale | Audiogon

The two best integrated amps I've heard at that general price point are the: Audionet Watt ($18,800) and the Mola Mola Kula ($15,055).  Honestly, nothing touches them sonically!  Since you specified $15K and below let me focus on the Mola Mola Kula.  Very transparent, 3D, dynamic, and has great bass.  For extra, you can also add a world class DAC (same as the famous Tambaqui) as well as a phono stage (same as Lupe), built-in, if you choose.

Linn Klimax DSM.  Brand new.  If not in Europe, price is even lower after subtracting VAT.

https://www.ebay.com/itm/374690462064?hash=item573d4ab970:g:UPcAAOSw~bZj66EV&amdata=enc%3AAQAIAAAAwJgJKJkKtWTE8GZ%2BsmCvj70eK2Edgdr6dsSf%2B3ZfLSjAEki%2BZIfv8uILQFs%2F0oJm%2B2bqYACt6QZfcA4UohEkhidI1J83ETadPR09Cj%2BoowvBJ0zWDsHLgwgeWhZO0QEc%2FMTZcCzAIpx0EVqvvV0Hf%2F4ctVkihR9hv93CJvI%2BBsUQ3X7PVdHgGFOdm%2B9%2BaBVS2GXDhl%2FOzFK0bJpFNX4uPSH700DmpQ551m85xdhyJE4thJnPaDV165GQlEaeTZYIJA%3D%3D%7Ctkp%3ABk9SR-DXuOaPYw