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300b amplifier

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Space tech laboratory - space-tech,

Space tech laboratory - space-tech,

$2950.00
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Assembled spartan tube amp - assembled,

Assembled spartan tube amp - assembled,

$478.02
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Oilily 300b vacuum tube - vacuum,

Oilily 300b vacuum tube - vacuum,

$1111.11
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300b stereo vacuum - , tube

300b stereo vacuum - , tube

$861.45
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Western electric ret 179a - electric,

Western electric ret 179a - electric,

$750.00
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Reisong 300b tube amplifier - reisong,

Reisong 300b tube amplifier - reisong,

$680.00
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300b mono tube amplifier diy - mono,

300b mono tube amplifier diy - mono,

$230.00
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300b tube amplifier diy - 300b,

300b tube amplifier diy - 300b,

$380.00
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Sun audio 300be 100v 300b - sv-300be,

Sun audio 300be 100v 300b - sv-300be,

$2700.00
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Dennis had inspire 300b - dennis,

Dennis had inspire 300b - dennis,

$3299.00
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Advance stella vacuum - stella, hc-1

Advance stella vacuum - stella, hc-1

$998.99
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One matched pair - matched,

One matched pair - matched,

$221.55
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One pair 300b monoblock - one,

One pair 300b monoblock - one,

$820.00
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Oilily a300bmk vacuum tube - oilily,

Oilily a300bmk vacuum tube - oilily,

$1299.00
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Takatsuki 300b vacuum - takatsuki,

Takatsuki 300b vacuum - takatsuki,

$1591.99
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One matched pair linlai audio - pair,

One matched pair linlai audio - pair,

$214.18
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300b single stereo tube - 300b,

300b single stereo tube - 300b,

$1318.99
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Transcendent sound the - sound,

Transcendent sound the - sound,

$1000.00
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Hifi 300b vacuum tube - vacuum, power

Hifi 300b vacuum tube - vacuum, power

$36.00
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Triode 300bd 300b tube - vp-300bd,

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

$1358.00
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Triode trk 300 300b vacuum - trk-300,

Triode trk 300 300b vacuum - trk-300,

$1011.02
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Elekit 8900 single - single, power

Elekit 8900 single - single, power

$1059.99
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Psvane horizon series - horizon, 300b-at

Psvane horizon series - horizon, 300b-at

$199.99
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1pc class single ended - 1pc, a

1pc class single ended - 1pc, a

$522.00
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Triode trv a300xr - trv-a300xr, we300b

Triode trv a300xr - trv-a300xr, we300b

$2739.99
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Lab 300b vacuum - ka, tube

Lab 300b vacuum - ka, tube

$3435.00
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Pair western electric 91a - electric,

Pair western electric 91a - electric,

$768.00
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Willsenton 800i single - r-800i,

Willsenton 800i single - r-800i,

$3026.88
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Edcor xpwr149 800v - edcor,

Edcor xpwr149 800v - edcor,

$265.00
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Spartan small 300b tube - f1,

Spartan small 300b tube - f1,

$479.00
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Hifi 300b vacuum tube - hifi,

Hifi 300b vacuum tube - hifi,

$470.00
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Parallel tube 300b - an,

Parallel tube 300b - an,

$234.60
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300b tube amplifier diy - tube, kit

300b tube amplifier diy - tube, kit

$199.99
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One pair class - hifi, power

One pair class - hifi, power

$779.00
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Allnic 1500 set 300b - allnic,

Allnic 1500 set 300b - allnic,

$7999.00
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Otomon lab 300b - otomon,

Otomon lab 300b - otomon,

$3500.00
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300b singled ended amplifier - singled,

300b singled ended amplifier - singled,

$3499.00
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Minava 300b tube amplifier - minava,

Minava 300b tube amplifier - minava,

$853.10
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Diy 300b tube pure power - diy,

Diy 300b tube pure power - diy,

$32.00
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1pc 300b shuguang - 300b, -98

1pc 300b shuguang - 300b, -98

$95.95
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Oldchen stereo tube - stereo,

Oldchen stereo tube - stereo,

$819.21
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1pc 300b single ended - 1pc,

1pc 300b single ended - 1pc,

$46.43
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Stereo 300b vacuum tube - 300b, power

Stereo 300b vacuum tube - 300b, power

$199.99
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For minava 300b - minava, se-300b

For minava 300b - minava, se-300b

$871.00
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Assembled hifi 300b vacuum - assembled,

Assembled hifi 300b vacuum - assembled,

$75.94
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300b tube amplifier - 300b, se

300b tube amplifier - 300b, se

$3500.00
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1pc hifi class single ended - hifi, a

1pc hifi class single ended - hifi, a

$522.00
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R800i 300b 845 class - 845, a

R800i 300b 845 class - 845, a

$3755.99
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Hifi 300b vacuum tube power - hifi,

Hifi 300b vacuum tube power - hifi,

$72.10
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Line magnetic 805ia tube - line, lm-805ia

Line magnetic 805ia tube - line, lm-805ia

$3299.00
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San tango 300b tube - san-ei,

San tango 300b tube - san-ei,

$2880.00
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Hifi 300b vacuum tube - 300b,

Hifi 300b vacuum tube - 300b,

$429.40
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Single end class - class, a

Single end class - class, a

$819.00
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Oldchen stereo tube - stereo,

Oldchen stereo tube - stereo,

$830.30
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Sophia electric 274b mesh - 274b,

Sophia electric 274b mesh - 274b,

$229.00
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Magnequest 030 output - fs-030,

Magnequest 030 output - fs-030,

$750.00
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Minava 300b single - minava, single-ended

Minava 300b single - minava, single-ended

$922.08
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Willsenton r300 plus 8w - willsenton, 8w+8w

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

$1569.40
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1pc class single - 1pc, hi-fi

1pc class single - 1pc, hi-fi

$708.80
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Custom 300b single - custom,

Custom 300b single - custom,

$4799.00
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Willsenton 800i single ended - r-800i,

Willsenton 800i single ended - r-800i,

$3027.84
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Hifi 300b vacuum tube power - hifi,

Hifi 300b vacuum tube power - hifi,

$79.94
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Line magnetic tube - line,

Line magnetic tube - line,

$3999.00
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Welborne labs laurel 300b - welborne,

Welborne labs laurel 300b - welborne,

$44.99
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Sophia electric 300b - 91-01,

Sophia electric 300b - 91-01,

$2950.00
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Audio enclosure chassis diy - gp-audio, enclosure/chassis

Audio enclosure chassis diy - gp-audio, enclosure/chassis

$149.99
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Quicksilver 300b set mono - quicksilver,

Quicksilver 300b set mono - quicksilver,

$5700.00
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Manley labs neo classic - labs, /

Manley labs neo classic - labs, /

$6361.29
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Tube preamplifier amplifier - tube, preamplifier/amplifier

Tube preamplifier amplifier - tube, preamplifier/amplifier

$110.00
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Western electric 300b vacuum - western,

Western electric 300b vacuum - western,

$242.66
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Takatsuki 300b vacuum - takatsuki, ta−300b

Takatsuki 300b vacuum - takatsuki, ta−300b

$1968.19
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Muzishare r100 amplifier - amplifier, 300b

Muzishare r100 amplifier - amplifier, 300b

$2725.00
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Audio tekne we300b - tekne, tm-8403p

Audio tekne we300b - tekne, tm-8403p

$9999.88
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Vintage nos panasonic 300b - panasonic, wj-300b

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

$110.00
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New box matching - new,

New box matching - new,

$1600.00
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300b stereo tube singled - se,

300b stereo tube singled - se,

$3200.00
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Set 300b vacuum tube - 1,

Set 300b vacuum tube - 1,

$455.00
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Elekit power amplifier vacuum - elekit,

Elekit power amplifier vacuum - elekit,

$1058.00
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Parallel tube 300b - parallel,

Parallel tube 300b - parallel,

$240.12
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Waiting audio 300b tube - waiting,

Waiting audio 300b tube - waiting,

$2980.00
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Manley neo classic - neo,

Manley neo classic - neo,

$5195.00
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Sansui outpt transformers - sansui,

Sansui outpt transformers - sansui,

$399.00
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Sanborn 126 126b 64 300a - 126,, 126b,

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

$12.33
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Reisong a50 mkiii - mkiii, 300b

Reisong a50 mkiii - mkiii, 300b

$1899.00
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Grade sophia electric blue - grade, a

Grade sophia electric blue - grade, a

$229.99
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Sun audio 300be - sv-300be, single

Sun audio 300be - sv-300be, single

$3000.00
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Single ended tube - single-ended, amplifier

Single ended tube - single-ended, amplifier

$862.60
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One matched pair linlai - one,

One matched pair linlai - one,

$216.41
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Inland controls model - inland,

Inland controls model - inland,

$300.00
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Otomon lab 71a 101d - lab, 71a/101d

Otomon lab 71a 101d - lab, 71a/101d

$5800.00
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Magical 2026 new sophia - magical,

Magical 2026 new sophia - magical,

$1599.99
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Otomon lab 300b drive - otomon,

Otomon lab 300b drive - otomon,

$7500.00
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300b437 onan amplifier assy - 300b437,

300b437 onan amplifier assy - 300b437,

$69.95
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Canary audio reference - reference, 300b

Canary audio reference - reference, 300b

$24.95
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Matched pair linlai 300b - matched,

Matched pair linlai 300b - matched,

$119.04
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Tango 10836 power - tango,

Tango 10836 power - tango,

$226.58
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📊96 listings · from $12.33 · avg $1614.82

Browse 96 300b amplifier listings currently in our index. Prices range from $12.33 to $9999.88, with an average of $1614.82. 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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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 $12.33, while premium listings can reach $9999.88 — giving you a wide budget spread to work with. The average price of $1614.82 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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