Audio Proz Service and Sales


Bugera EL34

Audio Proz Inv #: 58029

Quad set, Hi Quality. condition #10 NEW

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Groove Tubes GT-KT66-HP matched set of four

Audio Proz Inv #: 45956

New old stock! Matched set of four of these highly desirable and rare tubes, no longer in production. Get them cheaper here!

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Bugera EL34-4

Audio Proz Inv #: 56128

Matched quad set, new in box.

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Bugera EL34-4

Audio Proz Inv #: 56127

Matched quad set, new in box.

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NOS Sylvania 6GW8/ECL86

Audio Proz Inv #: 45330

New old stock tube with original but tattered box.

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We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


Bugera EL34-4 Power Pentodes

Audio Proz Inv #: 53920

Four in box. New.

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Bugera 6550 B-6 / Electro Harmonix 6550EH

Audio Proz Inv #: 55884

2 Bugera available. 10 Electro Harmonix available.  New Stock (Priced per tube each).

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HH Scott TR-12-18 vintage tube

Audio Proz Inv #: 43238

606-609. Used pullout, tested. Power transformer for model (____?)
Most of our tubes are listed without pricing information. If you see something you like, make us a competitive offer and we'll sell them at a price that will make you happy!

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Electro Harmonix EL-34 Tubes

Audio Proz Inv #: 58450

(8) in stock! $18 each, NEW.

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12AU7 RCA vintage tube

Audio Proz Inv #: 57588

retrieved from known low use machine. side getter,  clear top, Price is for the Pair. #8+

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Scott 311-D parts

Audio Proz Inv #: 45163

We have many parts available for the Scott 311-D tuner, including meters, switches, controls, transformer #138952, TR-6-2, and tubes 6BS8, ECC82, EF94/6AU6, and 6U8A. If possible please provide us with a picture of the part desired. All parts in excellent condition. Meter, $25; various tubes, $8 to $12 each.

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We offer expert time-saving advice on repairing many types of home and studio equipment, as well as consulting for product and recording issues, at a fair and reasonable cost.  For complex matters, we sometimes must charge a small technical fee.  If we can help solve your repair problem or technical conundrum, give us a call.  (617)926-8020.


Scott 310-D parts

Audio Proz Inv #: 45165

We have many excellent condition parts available for the Scott 311-D tuner, including meters, switches, controls, transformers, and tubes. If possible please provide us with a picture of the part desired. Meter, $25; Transformer, $12.

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NOS GE 6SN7GTB tubes

Audio Proz Inv #: 45262

New old stock tubes with original but tattered boxes.

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NOS Lafayette 12AX7A

Audio Proz Inv #: 45265

New old stock tubes. Pair available.

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NOS ISM 50C5/HL92

Audio Proz Inv #: 45264

New old stock tubes. International Service Master. Original boxes in OK condition. Pair available.

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NOS GE 6AG11

Audio Proz Inv #: 45263

New old stock tubes. Original boxes in OK condition. Pair available.

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NOS Amperex DL92-3S4

Audio Proz Inv #: 44126

New old stock tube.

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Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs.

We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


NOS Realistic 6HA5

Audio Proz Inv #: 45295

New old stock tube. Original boxes in good condition. Pair available.

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NOS GE 12AT6

Audio Proz Inv #: 45260

New old stock tube with original but tattered boxes. Pair available.

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Pair of NOS RCA 1V2 tubes

Audio Proz Inv #: 45296

One of which is a Sylvania "original" supplied to RCA. With original boxes in good condition.
Most of our tubes are listed without pricing information. If you see something you like, make us a competitive offer and we'll sell them at a price that will make you happy!

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NOS GE 12BY7A tubes

Audio Proz Inv #: 44115

New old stock tubes, N.O.S. GE, 4 available. $8 each.

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NOS RCA 6GH8A

Audio Proz Inv #: 45212

New old stock tubes with original boxes (slightly tattered). Pair available.

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NOS International C EF86-6267

Audio Proz Inv #: 45211

New old stock tubes with original boxes (slightly tattered). Pair available.

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We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock.


NOS GE 6EA8

Audio Proz Inv #: 45210

New old stock tubes with original but tattered boxes. Three pieces available.

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NOS GE 7581A KT66 tubes

Audio Proz Inv #: 43810

Pair. New old stock tubes with original boxes (slightly tattered). Pair available.

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