LHC Amplifiers

Tweed Princeton Tone Talk!
Did you know these classic amps sported different preamp tubes over their run, each adding its own flavor?

From the early 5A2 and 5C2 models to the iconic 5F2-A, the Princeton saw a sonic evolution through these tubes.

6SC7: Used in the earliest circuits like the 5B2. Think warm, round, and early breakup. These octal tubes have a smoother, more compressed character, perfect for bluesy cleans that get gritty quick.

6SL7: Also found in early models, such as some "TV-front" versions (5A2). Stepping up the gain! The 6SL7 offers a hotter signal with more harmonic richness and a punchier mid-range. Expect a more aggressive tone compared to the 6SC7.

12AX7: The king of gain, which became standard from the 5C2 model through the 5F2-A. When the 12AX7 arrived, it brought higher gain and a brighter, more articulate sound to the Princeton. This tube is known for its versatility, from sparkling cleans to crunchy overdrives.

Which era Princeton tone is your favorite? Let us know in the comments!

[Now Available] Experience the Art of Amp Building with this Bassman Tweed 5F6A Replica. ✨
We're incredibly proud of the dedication to historical accuracy poured into every single one of these amplifiers.
Featuring a true 5F6-A circuit, 60's specs, vulcanized fiber circuit board, and a cabinet crafted from solid finger-jointed pine, this Bassman replica is a masterpiece of vintage engineering.
We've even replicated the look of the old Astron capacitors (including a non-connected 'dead' cap for that truly untouched vintage vibe!). The sound? Pure, unadulterated classic tone.

Tubes:
5AR4 RCA
5881 (2) Tung Sol NOS
12AX7 RCA (2)
12AY7 RCA (1)

Speakers:
2 x Rola Alnico Smooth original 1959 cone
2 x Jensen P10R 2024

See all the painstaking details and hear it in action on Reverb (link in bio!)