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Home / Guitar Amplifiers / 300b amplifier refurbished & used for sale | For Sale USA
Oilily a300b 300b tube - oilily,

Oilily a300b 300b tube - oilily,

$1299.00
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Oilily 300b vacuum tube - vacuum,

Oilily 300b vacuum tube - vacuum,

$1111.11
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300b stereo tube amplifier - 300b,

300b stereo tube amplifier - 300b,

$800.00
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Assembled spartan tube amp - spartan,

Assembled spartan tube amp - spartan,

$411.50
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300b tube amplifier - diy,

300b tube amplifier - diy,

$380.00
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Manley labs neo - manley, 300b

Manley labs neo - manley, 300b

$5768.00
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300b mono tube - mono, diy

300b mono tube - mono, diy

$230.00
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Pair western electric - pair,

Pair western electric - pair,

$768.00
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300b singled ended - singled,

300b singled ended - singled,

$3499.00
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300b western electric vacuum - 300b,

300b western electric vacuum - 300b,

$1358.50
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Triode 300bd 300b tube - vp-300bd,

Triode 300bd 300b tube - vp-300bd,

$1358.00
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Hifi 300b vacuum tube - tube, power

Hifi 300b vacuum tube - tube, power

$36.00
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Eltus 12qq monoblock tube - eltus,

Eltus 12qq monoblock tube - eltus,

$15908.80
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6336a dual 300b - 300b, pp

6336a dual 300b - 300b, pp

$2499.00
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Kyowa wgi 300b japan - 300b-1,

Kyowa wgi 300b japan - 300b-1,

$200.00
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Edcor xpwr149 800v - 800v, (400-0-400)

Edcor xpwr149 800v - 800v, (400-0-400)

$269.00
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Elekit 8600r 300b - elekit, tu-8600r

Elekit 8600r 300b - elekit, tu-8600r

$2209.00
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Air tight atm 300 - tight, atm-300

Air tight atm 300 - tight, atm-300

$7999.99
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San tango 300b - tango,

San tango 300b - tango,

$2490.00
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Oilily a300bmk 300b vacuum - a300bmk,

Oilily a300bmk 300b vacuum - a300bmk,

$1059.00
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Minava 300b single ended - se-300b, single-ended

Minava 300b single ended - se-300b, single-ended

$922.08
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Triode trv a300 - triode, tube

Triode trv a300 - triode, tube

$1319.73
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Tango 300b 2a3 vacuum tube - vacuum,

Tango 300b 2a3 vacuum tube - vacuum,

$1980.00
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300b tube amplifier diy kit - 300b,

300b tube amplifier diy kit - 300b,

$199.99
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Triode trx p300m - trx-p300m, class

Triode trx p300m - trx-p300m, class

$3630.00
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300b parallel tube - an,

300b parallel tube - an,

$250.00
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Audio note conquest - audio,

Audio note conquest - audio,

$10925.00
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Advance stella vacuum - stella, hc-1

Advance stella vacuum - stella, hc-1

$998.99
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Spartan small 300b tube - small,

Spartan small 300b tube - small,

$479.00
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Horizon series 300b vacuum - series, 300b-at

Horizon series 300b vacuum - series, 300b-at

$428.58
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Hifi 300b vacuum - pc,

Hifi 300b vacuum - pc,

$470.00
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Triode trv a300 300b vacuum - triode,

Triode trv a300 300b vacuum - triode,

$1444.69
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300b stereo tube - 300b,

300b stereo tube - 300b,

$3200.00
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Audion silver night - silver,

Audion silver night - silver,

$3495.00
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Welborne labs laurel 300b - welborne,

Welborne labs laurel 300b - welborne,

$39.99
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300b parallel tube - 300b, parallel-tube

300b parallel tube - 300b, parallel-tube

$222.50
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Oilily a300bmk 300b - oilily, vacuum

Oilily a300bmk 300b - oilily, vacuum

$1099.00
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Magical 2026 new - magical,

Magical 2026 new - magical,

$1599.99
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Oldchen stereo tube - hi-fi,

Oldchen stereo tube - hi-fi,

$819.21
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Parallel tube 300b - parallel,

Parallel tube 300b - parallel,

$216.48
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Replacement jvc stereo - replacement,

Replacement jvc stereo - replacement,

$10.99
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Western electric 300b vacuum - 300b,

Western electric 300b vacuum - 300b,

$219.00
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Elekit power amplifier vacuum - power,

Elekit power amplifier vacuum - power,

$1049.00
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Single ended tube - single-ended,

Single ended tube - single-ended,

$862.60
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Vintage nos panasonic 300b - vintage, wj-300b

Vintage nos panasonic 300b - vintage, wj-300b

$110.00
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Ceramic amphenol chicago - ceramic, 4

Ceramic amphenol chicago - ceramic, 4

$15.95
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R800i 300b 845 class - r800i, a

R800i 300b 845 class - r800i, a

$3755.99
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One pair 300b - pair, monoblock

One pair 300b - pair, monoblock

$820.00
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Uesugi uty 300b tube - uesugi, power

Uesugi uty 300b tube - uesugi, power

$4899.99
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Px300b genalex gold lion - px300b,,

Px300b genalex gold lion - px300b,,

$375.90
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Waiting audio 300b tube - audio,

Waiting audio 300b tube - audio,

$2980.00
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San tango 300b tube - tango, with

San tango 300b tube - tango, with

$2880.00
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2pcs psvane tube - psvane, new

2pcs psvane tube - psvane, new

$138.99
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Takatsuki 300b vacuum - takatsuki, ta−300b

Takatsuki 300b vacuum - takatsuki, ta−300b

$1040.64
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Audio enclosure chassis - gp-audio, diy

Audio enclosure chassis - gp-audio, diy

$149.99
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Line magnetic 805ia - line, tube

Line magnetic 805ia - line, tube

$3106.00
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Stereo 300b vacuum tube power - 300b,

Stereo 300b vacuum tube power - 300b,

$199.99
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Melody push pull - melody, push-pull

Melody push pull - melody, push-pull

$2299.99
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Fezz audio lybra 300b - lybra,

Fezz audio lybra 300b - lybra,

$4229.00
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Willsenton r300 plus 8w - r300, 8w+8w

Willsenton r300 plus 8w - r300, 8w+8w

$1569.40
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Hifi 300b vacuum tube - vacuum,

Hifi 300b vacuum tube - vacuum,

$415.00
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Sophia electric 274b mesh - electric,

Sophia electric 274b mesh - electric,

$199.00
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Elekit 8900 single power - elekit,

Elekit 8900 single power - elekit,

$1049.99
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Inland controls model 300b - inland,

Inland controls model 300b - inland,

$240.00
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Minava 300b tube amplifier - minava,

Minava 300b tube amplifier - minava,

$853.10
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One pair 300b monoblock vacuum - pair,

One pair 300b monoblock vacuum - pair,

$820.00
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Single ended tube - single-ended, amplifier

Single ended tube - single-ended, amplifier

$855.00
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Luxman 300 mono - mb-300, power

Luxman 300 mono - mb-300, power

$9500.00
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Fezz audio lybra 300b - audio, tube

Fezz audio lybra 300b - audio, tube

$4229.00
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Single ended minava 300b - minava, se-300b

Single ended minava 300b - minava, se-300b

$862.60
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Lab 300b vacuum tube - ka,

Lab 300b vacuum tube - ka,

$3157.00
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Vintage johnson 224 - 4-vintage,

Vintage johnson 224 - 4-vintage,

$29.99
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Manley neo classic 300b - manley,

Manley neo classic 300b - manley,

$5195.00
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1pc class single ended - a, single-ended

1pc class single ended - a, single-ended

$708.80
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1pair linlai 300b vacuum - 300b-gr,

1pair linlai 300b vacuum - 300b-gr,

$129.99
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Western electric 300b - western,

Western electric 300b - western,

$924.90
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1pc linlai 300b vacuum tube - 1pc,

1pc linlai 300b vacuum tube - 1pc,

$130.99
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300b vacuum tube amplifier pcb - 300b,

300b vacuum tube amplifier pcb - 300b,

$189.99
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Line magnetic tube - line,

Line magnetic tube - line,

$3147.99
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Willsenton r300 plus - willsenton, 8w+8w

Willsenton r300 plus - willsenton, 8w+8w

$1629.25
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Tube preamplifier amplifier - 22,

Tube preamplifier amplifier - 22,

$90.00
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Triode trv a300se - trv-a300se, tube

Triode trv a300se - trv-a300se, tube

$2422.91
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Willsenton r300 plus 8w - willsenton,

Willsenton r300 plus 8w - willsenton,

$1651.60
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Sophia electric 300b - sophia,

Sophia electric 300b - sophia,

$2950.00
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Uotang mk9000 audiophile - uotang,

Uotang mk9000 audiophile - uotang,

$2458.60
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Sanborn 126 126b 300a - 64-300a, &

Sanborn 126 126b 300a - 64-300a, &

$14.51
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Freed 36912 2a3 300b single - 36912,

Freed 36912 2a3 300b single - 36912,

$288.00
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Magnequest 030 output - magnequest,

Magnequest 030 output - magnequest,

$850.00
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Sun audio 300be 300b - audio,

Sun audio 300be 300b - audio,

$3045.99
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Eltus 12qq mono tube - mono,

Eltus 12qq mono tube - mono,

$15908.88
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Western electric 300b vacuum - western,

Western electric 300b vacuum - western,

$1895.00
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Matched pair linlai 300b g - 1,

Matched pair linlai 300b g - 1,

$173.39
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Takatsuki 300b vacuum - takatsuki, ta−300b

Takatsuki 300b vacuum - takatsuki, ta−300b

$1591.99
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Tango 20s output - tango, fw-20s

Tango 20s output - tango, fw-20s

$653.55
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Wayne audio integrated tube - integrated,

Wayne audio integrated tube - integrated,

$3580.00
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Otomon lab 71a 101d drive - otomon, 300b

Otomon lab 71a 101d drive - otomon, 300b

$7000.00
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📊96 listings · from $10.99 · avg $2009.89

Browse 96 300b amplifier listings currently in our index. Prices range from $10.99 to $15908.88, with an average of $2009.89. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about 300b amplifier →

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Everything you need to know about 300b amplifier

Whether you are looking for a brand-new or second-hand 300b amplifier, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $10.99, while premium listings can reach $15908.88 — giving you a wide budget spread to work with. The average price of $2009.89 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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