As requested, here is more info and high-resolution photos of the 249.000.00 EUR Manron Delta SE100 tube power amplifiers. It took almost a year to design and finish these flagship tube mono block power amplifiers. The official world premiere took place at the High End Swiss 2018.

"The main constructor of the amps was Sławomir Siedlecki. The creator of the Manron brand and the originator of the amplifier's construction is Krzysztof Szmit. The design of the amplifier is Monoblock Single Ended. The GM100 lamp operates at an anode voltage of 1,700V. The power consumed from the network is about 700W. Musical power about 150W. Bandwidth from 17Hz to 33kHz (+/- 3dB)."

The price for 2 monoblocks is exactly 999,000.00 PLN or 249.000.00 EUR