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BEST TUBE AMP
Fender Blues Junior IV
$6 on Reverb
BEST MODELING AMP
Fender Deluxe Reverb (Reissue)
$6 on Reverb
BEST BRITISH
Vox AC15C1
$20 on Reverb

The used amp market is deep: Fender Blues Juniors at $400, Vox AC15s at $500, Marshall DSLs at $600, and Deluxe Reverbs at $900. All are instruments that professional players use on recordings. All are available for 40–60% off new prices.

The key choice is tube vs modeling: tube amps respond better to your playing but need occasional maintenance. Modeling amps are maintenance-free with more sounds. Both have their place.

Tube Amp vs Solid State — The Real Difference

Tube amps use vacuum tubes (EL34, 6V6, EL84) to amplify signal. They produce harmonic distortion that sounds musical, compress dynamically, and respond to picking dynamics in a way that feels alive. Solid state amps use transistors — more consistent, more durable, lighter, and cheaper to maintain.

Modern solid state amps (Boss Katana, Fender Mustang) use DSP to model tube amp behavior convincingly. The honest answer: the best solid state amps sound excellent; some tube amps sound bad. It's about which specific amp sounds right for your style, not the category.

Not sure which to buy? Read the full tube amp vs solid state comparison →

The 8 Best Used Guitar Amplifier Buying Guide

#1

Fender Blues Junior IV

Tube combo · 15W$400–$550 used

Best for: Blues, country, classic rock, home practice and small venues

15W is plenty for small venues when miked. Three 12AX7 preamp tubes, two EL84 power tubes. The most-gigged small tube amp in the US. Fender tone in a portable package. Retails for $700 new — used examples appear constantly at $400–$500.

What to check used: The master volume pot can get scratchy — spray with DeOxit contact cleaner, $15 fix. Check the speaker for tears or voice coil rubs (play a low E and listen for rattling). Budget $50–$80 for a retube if it sounds dull.

Available now

#2

Fender Deluxe Reverb (Reissue)

Tube combo · 22W$900–$1,200 used

Best for: Classic clean Fender tone, studio recording, blues, country, indie

22W tube is louder than it sounds — this can get unruly in a small room. Two 6V6 power tubes, spring reverb that defined the Fender sound. Used market is stable because demand is constant. The definitive recording amp for non-heavy styles.

What to check used: Verify the reverb tank is intact — a cracked tank produces excessive metallic splashing. Shake gently; it should not rattle. The 6V6 tubes should be matched.

Available now

#3

Vox AC15C1

Tube combo · 15W EL84$450–$650 used

Best for: British jangle, indie, rock, Beatles/Radiohead inspired players

Top-boost channel with classic EF86 voicing. EL84 power tubes give slightly brighter, more compressed tone than 6V6. The AC15 vs Blues Junior debate has been ongoing for 20 years — they serve different sounds. If your influences include The Beatles, The Strokes, or Arctic Monkeys, this is the specific amp those sounds were made on.

What to check used: The AC15 breaks up earlier at lower volumes than American-voiced amps — less clean headroom than the Blues Junior. Verify the standby switch is functional.

Available now

#4

Marshall DSL40CR

Tube combo · 40W (switchable 20W)$500–$700 used

Best for: Classic rock, modern rock, versatile gigging amp

Two channels (Classic Gain and Ultra Gain), reverb, CRX emulated out for direct recording. Marshall's most popular modern amp. The wattage switch is genuinely useful for controlling volume at home. The Classic Gain channel cleans up well with guitar volume rolled back.

What to check used: The Celestion Seventy-80 speaker is frequently replaced — budget $80–$120 for a Celestion Vintage 30 or Greenback upgrade if it sounds harsh. ECC83/EL34 tube complement means full retube is $80–$120.

Available now

#5

Boss Katana-50 MkII

Modeling combo · 50W (switchable 0.5/25W)$200–$300 used

Best for: Practicing, home recording, versatile styles, silent recording via USB

The best solid state amp under $300. Five amp characters, 60 built-in effects via the Boss Tone Studio app, and a USB audio interface built in. Tube purists dismiss it; professionals use it for silent stage rigs. The 0.5W setting enables true bedroom-level practice.

What to check used: Requires the free Boss Tone Studio software to access all effects and customization. Factory reset is easy (hold the Hold button on power-on). Verify all 5 amp character buttons are functional.

#6

Orange Rocker 15

Tube combo · 15W (switchable 7W/1W)$600–$800 used

Best for: Classic British rock, garage, psychedelic, home practice

Three-way wattage switch lets you use it at home (1W) through to rehearsal (15W). All-tube Class A design. Orange's distinctive 'dirty British' preamp character. The 1W setting genuinely achieves bedroom-level tube saturation — uncommon in this price range.

What to check used: Orange's voicing is distinctly mid-forward and compressed — different from Fender clean or Vox chime. Try before buying if you've only played American-voiced amps.

Available now

#7

Fender Princeton Reverb (Vintage/Reissue)

Tube combo · 12W$800–$1,200 used (reissue)

Best for: Blues, fingerpicking, recording, players who want studio tone at low volume

Famous as a recording amp. 12W is genuinely quiet at home but can get volume. Single 10-inch speaker. Vintage silverface (1968–1981) and blackface (1964–1967) examples are considered the gold standard of clean tone. The most studio-referenced small combo amplifier.

What to check used: For vintage examples: ask about last service date. Old filter caps are the main cause of hum and potential safety issues. Budget for a cap job ($150–$200) on any vintage amp without recent service history.

Available now

#8

Marshall JCM800 2203 (Vintage)

Tube head · 100W$1,200–$2,000 used

Best for: Classic rock, hard rock, 1980s–1990s rock tone

The definitive 1980s rock amp. All 100W is unusably loud for most rooms — pair with an attenuator or a cab with low-sensitivity speakers. Durable amp with main failure points at preamp tubes and capacitors. The classic rock tone is unmistakable and still appears on professional recordings.

What to check used: Need a speaker cabinet ($200–$400 used for a Marshall 1960 cab) to complete the rig. Ask about service history — a 40-year-old amp needs a cap inspection.

Available now

Used Amp Inspection Checklist

  • Power on test: Let it warm up 5 minutes — hiss, hum, or crackling suggests tube or capacitor problems. Listen for any intermittent issues.
  • All controls: Turn every knob through full range while playing a sustained note. Any crackling or dropout indicates worn potentiometers ($15–$50 to replace).
  • Speaker cone: Gently press the cone — no rub, tear, or voice coil scraping. Play a low E string and listen for any rattling or distorted character.
  • Reverb tank: Tap the amp physically — spring reverb should decay smoothly, not cut out or crackle. Damaged tanks produce metallic splashing.
  • Tube condition (tube amps): Look through the vents at the power tubes — glowing amber is healthy; dark orange plates or bright white spots indicate failure. Dark tubes are likely failed.
  • Channel switching: Switch between clean and lead channels while playing. Both should produce output immediately with no crackling. Test footswitch input if present.
  • Cabinet integrity: Check for cracks in the tolex or vinyl covering. More importantly, check the baffle board (speaker mounting board) is firmly attached with no buzzing.
  • Output at volume: Test at various volumes — tube amps can have intermittent issues that only appear at high power. Test the effects loop with a cable loopback if present.

Frequently Asked Questions

How many watts do I actually need?

Much less than you think. Tube watts are louder than solid state watts. A 15W tube amp is loud enough for most small venue gigging when miked. A 30–50W tube amp is enough for most medium venues unmiked. 100W tube heads are almost never used at full power — they're designed for stadium touring. For home practice: 5W tube or any solid state. For small gigs: 15–30W.

Is buying a vintage tube amp risky?

It depends on the amp. Vintage Fenders (Blackface 1964–1967, Silverface 1968–1981) are well-understood, well-documented, and parts are still available — a good vintage Fender can be purchased with confidence if checked by a tube amp tech. Key risks: old filter capacitors (the main cause of hum) that need replacement ($100–$200 service), worn tubes, and original wiring that's 40–60 years old. Always buy from someone who has recently had the amp serviced, or budget for a cap job.

Combo vs head and cab — which should I buy?

Combos (amp and speaker in one cabinet) are more portable, simpler, and typically cheaper. Good for players who move between venues regularly. Head and cab units let you change the cabinet (different speakers change the tone dramatically) and are typically louder per dollar at higher wattages. For home players and small venue gigglers: combo. For players who need stage volume or record in a fixed studio: head/cab.

What should I inspect when buying a used tube amp?

Power on and let it warm up 5 minutes. Listen for hiss, hum, crackling, or sudden volume drops. Test the reverb by physically tapping the amp. Test all controls. Check the speaker cone (press lightly — no rub or tear). Look at tube sockets under the chassis — corrosion there is a bad sign. Ask when tubes were last replaced (EL34s and 6L6s last 1,000–2,000 hours of playing).

What is the best guitar amp under $500?

For tube amp: Fender Blues Junior IV (used $400–$500) is the top recommendation — 15 watts of Fender tube tone, well-maintained used market, parts readily available. For modeling/versatility: Boss Katana-50 MkII (used $200–$280) is the best all-around amp at this price, with more sounds than any tube amp. For home practice at low volumes: Blackstar HT-5R (used $250–$350) lets you get tube saturation at bedroom levels.

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