Midnight Special 300B Head


The Midnight Special Head is the enhanced head version of the tried-and-true Midnight Special Combo introduced in 2000 and the best known Siegmund amplifier.

This is the 300B version with an original circuit design that creates a huge sound stage and super wide frequency response
with round warm lows, talking mids and sweet sparkling harmonics in perfect musical balance without any restrictions or limitations.

Plus an added Volume bright switch, Reverb Intensity, Voice Control and Master Volume and 'Live Amp Sound' Line Out.

Handwired point to point terminal wiring

Octal preamp tubes

Versatile, interactive tone controls

Transformerless Reverb

True bypass Master Volume

External class AB bias & balance adjust

Unique no-compromise Custom Transformers
by Mercury Magnetics

Highest quality NOS components

Class A single-ended, 10 Watts
Self-biasing output stage
300B mesh plate
82 Mercury Vapor Tube Rectifier
Octal base preamp tubes 6SL7,6SN7
LAS Line Out ™ with Level Control
and XLR and TRS outputs
Series FX loop
Reverb On/Off jack
Transformless tube reverb
Sprague Vitamin Q paper/oil tone capacitors
Carbon composition resistors
Sprague ATOM TVA filters
Point to point terminal cloth wiring
NOS tube sockets
Powder coated Aluminum chassis 12 ga.

100,120,220,240VAC 50/60Hz
Handmade in USA

Available as Head cabinet, Chassis only or 1x12 combo

Octal preamp tubes have a wider tonal spectrum and sound more relaxed and revealing with less compression than later 9 pin versions.
In combination with the harmonic richness of the custom wound extended range output transformer by Mercury Magnetics
the Midnight Special reveals the pure power & beauty of the vibrating string.

The Midnight Special is entirely hand-built, using the best-sounding NOS caps and resistors.
Terminal point-point wiring is the same technique used by the military and in aviation construction for reliability.

The 300B is single-ended class A self-biasing and considered by audiophiles as the 'Holy Grail' of output tubes since it was introduced in 1934.
This tube has a unique sound quality unlike any other and has become legendary for it's big soundstage, warm round lows, detailed mids and sparkling highs in perfect musical harmony and balance.

Raising the quality level even higher, the Midnight Special has a transformerless Reverb design, providing extra rich harmonics and reflections.
The stacked control knob provides Mix and Intensity settings from Zero Reverb over subtle swells all the way to huge endless Reverb only.

The tone controls are highly interactive and the Voice control shifts the entire EQ from rich, fat, warm to bright, thin and edgy tonal ranges.
The Master Volume is true-bypass when turned all the way up.

The output transformer has musical even-order harmonic break-up.
The LAS -Live Amp Sound- Line Out ™ comes with Level control and XLR and TRS outputs. When the speaker cable is unplugged an internal load takes over.

And as always, all Siegmund amps are completely hum-free without compromising tone and liveliness.

Laser Engraved Front Panel (Illuminated option available)

Panel Controls:

Front: Input, Volume/Bright, Reverb/Mix, Voice, Treble, Middle, Bass, Master/EQ Bypass, Standby Switch, Power Switch

Rear: Reverb Input and Output and On/Off switch, LAS Line Out ™ and Level control, XLR and TRS outputs, Series FX Loop


Standard: 2 x 6SL7, 6SN7, 300B, 82

Vintage NOS and new production tubes. Ask for Premium Tube Upgrades for the ultimate tone experience!
Ceramic sockets with gold pins are available as a custom option.

Speaker outputs are available in 8 or 16 ohm only or 8/16 ohm switchable.

Covered cabinets are individually custom made to order from solid pine and your choice of color, grill type and handle.
Ask for samples of available covering and grill cloth.

Solid wood cabinets are individually custom made to order from hand selected solid wood with oil finish.

Covered tolex cabinet

Sound Samples:

Here are a couple sound samples with a Tone Tubby Purple Haze and smaller 17 oz Alnico magnet.
The guitar is the
I upgraded a large diaphragm condenser tube mic with a Micro Tube, Neumann U47 replacement capsule and Jensen transformer plugged into the Simplex Mic Pre

Clip 1

Clip 2

LAS -Live Amp Sound- Line Out is a trademark of Siegmund Guitars & Amplifiers