Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

RT

Ruby Tubes

Ruby 300B Power Vacuum Tube

Ruby 300B Power Vacuum Tube

Ruby Tubes

Ruby 300B Power Vacuum Tube

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$99.99

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shop is the next step on our mission to make commerce better for everyone.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

The Ruby Shuguang 300B Power Vacuum Tube will upgrade your audio setup with its top performance. Designed with precision and quality in mind, this vacuum tube provides unparalleled sound quality that will enhance your listening experience.
...

Delivery & Returns

Ruby Tubes

Ruby Tubes

Exclusive offer available

Ruby Tubes

4.9 (107)

More from Ruby Tubes

JJ 12AX7 Vacuum Tube - warm tone vacuum tube for guitar amplifiers. ECC83S Vacuum tube. Vacuum tubes for electric guitar amplifiers. pre-amp vacuum tube

8% off

JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)

(12)

JJ 6L6 Power Vacuum Tubes (Matched)

(5)

Ruby 12AX7AC5 Preamp Vacuum Tube (Matched)

Ruby 12AX7AC5 Preamp Vacuum Tube (Matched)

(4)

JJ EL84 Power Vacuum Tube (Matched)

14% off

JJ EL84 Power Vacuum Tube (Matched)

(6)

JJ 6V6S Power Vacuum Tube (Matched)

JJ 6V6S Power Vacuum Tube (Matched)

(2)

JJ ECC81 / 12AT7 Preamp Vacuum Tube

JJ ECC81 / 12AT7 Preamp Vacuum Tube

(1)

Generic Black Pointer Knob - w/ set screw (Flawed)

50% off

Generic Black Pointer Knob - w/ set screw (Flawed)

2% off

JJ EL34 Power Vacuum Tube (Matched)

(6)

Ruby 50x50Mx500 Snap-In Capacitor

Ruby 50x50Mx500 Snap-In Capacitor

Ruby 10 MFD @ 450V Capacitor

33% off

Ruby 10 MFD @ 450V Capacitor

CC143 Right Angle Jack

63% off

CC143 Right Angle Jack

Ruby 100 MFD @ 500V Axial Capacitor

Ruby 100 MFD @ 500V Axial Capacitor

Related to Ruby Tubes

Mojotone

4.8

(300)

Humbucker Slug Nickel (No Chamfer)

22-Ga Topcoat PVC Coated Wire

(1)

22-Ga Solid Yellow Cloth Covered Wire

22-Ga Stranded Shielded External Braid Cloth Covered Wire

(1)

22-Ga Stranded Cloth Covered Wire

Single Coil Pickup Height Spring for Strat/Tele

Mojotone Vintage Taper CTS 500K Short/Split Shaft Guitar Potentiometer

(10)

Medium White Piping 7/16''(H) x 1/8'' Bead with Lip

Mojotone Gold Rivets

28-ga 4-Conductor Stranded Shielded Guitar Pickup Wire

(1)

Short Humbucker/P90 5-40 Polepieces Nickel (1022 Steel) (Set of 6)

Mojotone 25uF 50V Aluminum Electrolytic KingCap Capacitor

Chicago Music Exchange

4.8

(2.3K)

CME Wolf Lightning T-Shirt Accessories / Merchandise

CME "Wolf Lightning" T-Shirt

(16)

CME "Wolf Lightning" Die Cut Sticker, Matte Vinyl, 4x4" Accessories / Merchandise

CME "Wolf Lightning" Die Cut Sticker, Matte Vinyl, 4x4"

(5)

Ernie Ball Regular Slinky Electric Guitar Strings 10-46 Accessories / Strings / Guitar Strings

Ernie Ball Regular Slinky Electric Guitar Strings 10-46

(6)

RockBoard Flat Patch Y Splitter Cable 20 cm / 7 7/8" Accessories / Cables

RockBoard Flat Patch Y Splitter Cable 20 cm / 7 7/8"

(7)

K&K Pure Mini Passive Bridge Plate Acoustic Guitar Pickup Parts / Acoustic Pickups

K&K Pure Mini Passive Bridge Plate Acoustic Guitar Pickup

(6)

CME "Fillmore" Rectangle Sticker, Gloss Vinyl, 4x2" Accessories

CME "Fillmore" Rectangle Sticker, Gloss Vinyl, 4x2"

Monty's Montypresso - The Original Guitar Relic Wax Tin Accessories / Tools

Monty's Montypresso - The Original Guitar Relic Wax Tin

(19)

CME Logo T-Shirt Black

(7)

CME "Retro Circle" Heather Cool Blue T-Shirt Accessories / Merchandise

CME "Retro Circle" Heather Cool Blue T-Shirt

(2)

D'Addario EXL110 Regular Light Set Electric Guitar Strings 10-46 Accessories / Strings / Guitar Strings

D'Addario EXL110 Regular Light Set Electric Guitar Strings 10-46

D'Addario EJ16 Phosphor Bronze Light Acoustic Guitar Strings 12-53 Accessories / Strings / Guitar Strings

D'Addario EJ16 Phosphor Bronze Light Acoustic Guitar Strings 12-53

(4)

CME "Concert" Die Cut Sticker, Gloss Vinyl, 4x3" Accessories / Merchandise

CME "Concert" Die Cut Sticker, Gloss Vinyl, 4x3"

(4)

Allparts Music

Exclusive offer available

gold jackplate socket and 2 screws

Allparts Retrofit Jackplate for Telecaster

(8)

Split Shaft Audio Pot front angle view

CTS 500K Split Shaft Audio Potentiometer

(2)

Long threaded jack top view black

Switchcraft® Stereo Long Threaded Barrel Jack

(3)

two nickel screws and matching buttons

Allparts Standard Strap Buttons

(7)

nickel neckplate with 4 holes

Allparts Standard Neckplate

(5)

Split shaft audio pot

CTS 250K Split Shaft Audio Potentiometer

(1)

black knob switch with chrome base

Allparts Short Toggle Switch

(3)

Allparts Vintage Style Speed Knobs (2 pcs)

(8)

black washer for guitar tuners

Pack of Guitar Tuner Washers

(1)

Switchcraft input jack gold at an angle

Switchcraft Input/Output Jack

(3)

standard nickel pickguard screw

Allparts Standard Pickguard Screws

(1)

square nickel jackplate with 4 matching screws

Square Jackplate for Les Paul Nickel

(6)

Fender

4.9

(406)

Fender Studio® Pro

(20)

Celluloid Medley Picks, 351 Shape - 12 Pack

(26)

Original Tuners

(15)

SuperSoft Straps

(12)

Blues Deluxe Harmonicas

(17)

Professional Series Tweed Instrument Cables

(11)

Premium Celluloid Picks, 351 Shape -12 Pack

(20)

Limited Edition Debut Collection™ Telecaster®, Sonic Blue

(6)

Mustang® LT25

(22)

Essentials Guitar Wall Hanger

(3)

Frontman® 10G

(7)

Adjustable Guitar Stand

(11)

Discover top brands

Mandala Scrubs

Exclusive offer available

Mandala Scrubs

4.6 (11K)

Aviator Nation

Exclusive offer available

Aviator Nation

4.5 (89.4K)

Rockstar Original

Rockstar Original

Exclusive offer available

Rockstar Original

4.6 (180.7K)

OOFOS

Exclusive offer available

OOFOS

4.5 (178.4K)

Exclusive offer available

The GLD Shop

4.7 (167.2K)

Little Sleepies

Exclusive offer available

Little Sleepies

4.9 (399K)

Fashion Nova

4.3 (428.9K)

Culture Kings US

Culture Kings US

Culture Kings US

4.7 (146K)

32 Degrees

4.7 (227.9K)

Exclusive offer available

Revice

4.5 (8.5K)