Overview

The Fender Blues Junior IV is a 15-watt all-tube combo amplifier that has earned its place as one of the most popular gigging amps for blues, rock, and roots players. Powered by a pair of EL84 output tubes and a trio of 12AX7 preamp tubes, it pushes sound through a 12-inch Celestion A-Type speaker that delivers warm, articulate tones with a distinctly American voicing. The front panel keeps things straightforward with volume, master volume, treble, bass, middle, and reverb controls, plus a FAT boost switch that thickens the midrange for a fuller sound at lower volumes. Clean tones sparkle with the kind of headroom that makes single-coil pickups sing, and as the volume is pushed, the amp transitions into a natural, harmonically rich overdrive that responds beautifully to picking dynamics. The spring reverb is lush and drip-laden, adding dimension without overwhelming the core tone. At just under 32 pounds, the Blues Junior IV is genuinely portable for a tube combo, and the lacquered tweed exterior with a vintage-style grille cloth gives it classic Fender visual appeal. This is an ideal choice for gigging musicians who play small to medium venues and want authentic tube tone in a compact, no-nonsense package. The 15-watt output may not be enough for louder stage situations without microphone support.

Guitar Amplifiers

A beloved 15-watt all-tube combo with EL84 output tubes and Celestion A-Type speaker that delivers sparkling cleans and rich harmonic overdrive, perfect for small to medium venues at under 32 pounds.

Instrument Details

$749 Intermediate
Brand Fender
Type Tube Combo Amp
Made In Mexico
Year 2018
4.6 1 vote

AI Reviews

4.6 /5

The Fender Blues Junior IV is the definitive refinement of a modern legend. Fender addressed the primary criticisms of previous iterations by swapping in a Celestion A-Type speaker, which effectively tames the brittle high-end 'fizz' that plagued the version III. This speaker choice, combined with a modified preamp circuit, results in a much fuller, more balanced frequency response that feels 'broken-in' right out of the box.

Tonally, it occupies the perfect middle ground for the working musician. At 15 watts, you can push the EL84 power tubes into a creamy, harmonically rich overdrive without clearing out a small club. It remains an elite pedal platform, taking overdrives and delays with transparency and depth. The onboard spring reverb has also been tweaked for a smoother, more musical decay that doesn't get washed out as easily at higher settings.

While the build is solid and portable, the compact cabinet size still imparts a slight 'boxiness' when pushed to extreme volumes"a common trade-off for its lightweight footprint. Additionally, some purists may miss a standby switch. However, for the intermediate player or gigging pro needing a reliable, soulful 'roots' amp, the IV is the best version yet. It's an industry standard for a reason: it delivers authentic tube warmth in a package that's easy on the back and the wallet.

Category Ratings

Guitar Amplifiers
4.6
Feb 15, 2026
AI-Generated Review Generated via Google API. This is an automated evaluation, not a consumer review. Learn more