Hello, Steph and community.

First and foremost, a big thank you for sharing your enthusiasm and knowledge so wonderfully, fostering interest in both the DIY and the pure hi-fi vacuum tube sound.

My passion for hi-fi began when I worked in a dedicated store, though I rarely encountered vacuum tube amplifiers due to lack of consumer interest, marketing focus on watts, low-sensitivity speakers, and difficulty in producing articulate bass with tubes.

Like many enthusiasts, I started with transistor amplifiers, but few matched the musicality of vacuum tube amplifiers. Eventually, I switched to push-pull tube amplification. Despite sometimes missing the punch with certain genres, I don't intend to go back.

With high-sensitivity speakers (97 dB/w/m), I'm ready for an all-tube single-ended (SE) integrated amplifier.

The SE market is nonexistent in my area, limiting my ability to explore options.

Online, there's a wide range of products and prices, with good ones being expensive and even poor ones receiving good reviews.

I'm seeking a minimalist design with few components, I believe that each component adds some kind of "effect" to the sound.

Minimal or no feedback, and the highest possible naturalness and musical timbre.

I seek clarification on the characteristics and acoustic attributes of various vacuum tubes, their combinations, and circuit designs, preferring point-to-point wiring.

Triode vs. Pentode

No or low feedback, posive vs negative.

For the genres I listen to—jazz, blues, 70s rock, and some classical—I seek:

A sweet, mid-warm, and charming timbre

Good texture of instruments

A natural, realistic soundstage (not too false airy or, but also not closed or nasal)

Possible dynamics and bass speed

Refined, sweet smooth, but detailed treble

I've been suggested to look into SET 300B.

I'm seriously considering building your 300B design with upgraded Tango transformers. What differentiates your budget design from a high-end one?

Is there any advantage in using an even more oversized input transformer if available with the same voltages and the use of a capacitor bank in the stabilization circuit of lower values ​​but a total oversized one?

By the way, my mains voltage is 240V.

A big thank you, well done.

Congratulations.