Tyler Rourke, Bellingham WA, with working replica of hi-fi amplifier

designed and built by Jack Rosenberg (engineer on John von Neumann's

Electronic Computer Project) as a gift from the Institute for Advanced

Study to Albert Einstein on his 70th birthday in 1949. Sounds as good

as it looks!

Minifigs have plenty of guitars these days but not much to play them through! How about a classic English class AB tube amplifier?

Gibson Es335 resting on a 1963 Bassman amp - a beautiful blues tone!

Marshall JCM800

Does this one go up to 11?

Taking a photo of my Mustang 2 Amp settings is probably the only way they will be remembered by me.

NYC

This is a sound enhancer,it amplifies the sound of the sea when you sit behind it.

Mystere

hughes & kettner vortex halfstack 100w 4x12" celestion speakers.

(a.k.a girlfriend #3)

Maria Rotariu

This 20 watt Tiny Terror valve amplifier lives up to it's name.

A two pound coin for scale.

VS100

M50 mark II and Asahi Super Takumar 50mm F1.4. Model: my Twin Darling vacuum tube amplifier, with CV5311 driver tubes (the small ones) and 1626 power tubes (the big Coke-bottles;)

A small part of a bigger lot. :)

Tube in high end audio headphone amp.

Room B ass. sound lab Bologna

one that I built from scratch in 1980 using experience gained from repairing stereo equipment for many years. Still works perfectly to this date. I built at least two others, they have held up too. Boards on the right are LED level indicators for output.

1978

A well-respected amplifier of the late seventies from Hitachi: Stereo power amp HMA-7500. This Hitachi was one of the first neutral-sounding MOS-FET power transistors successfully used. The amp really sounds refreshingly neutral. 75 watt pc is the power of HMA-7500.

The front controls are minimalist, nothing else is needed. It was offered in silver and black front and became a Hitachi amp bestseller. Here is the version with optional 19" rack mounts in nice shape.

Good job they are only EL84’s in there. EL34 thru KT88’s are cooking territory. The Blackstar HT20 RH is a lovely sounding amp, especially through the Celestion greenback speaker

On the far right, on the grill, it says: "Marshall."

Well, it is an amplifier, in a sense.

It´s an old, forgotten, El Camino, at least.

A Marshall-Mesaboogie-Fender sandwich.

I have just found Alex is not only an increadible photographer, but also a crazy music lover. This is what I saw at his lab. I did not know audio gears could be so sophiscated.

OLYMPUS DIGITAL CAMERA

I pulled an old amp out of the cupboard and after replacing a couple of the tubes it worked fine. The blue fluorescence from electrons on the envelopes may indicate a problem, I am not sure. The speakers are my own design/build using SEAS and Bohlender Graebner drivers.

Get right in there to see that amtrak logo, yes, i travel through time daily. ∆

Making of video!!!

Coffee and music

Sometimes we need both to boost our energy...

This Gibson amplifier, and many more, will soon be available to music lovers worldwide…

Visit www.GigNroll.com to find out how.

A limited Edition Fender Stratocaster with Amplifier.

This project is about a TPA3001D1 audio power amplifier. We built and tested this amplifier as a more efficient alternative for the TDA2030 power amplifier.

Additional details and all the project files are available at jayakody2000lk.blogspot.com/2021/11/tpa3001d1-power-ampli....