Tube

27 Days Left

Jadis JA80 Monoblock Power Amplifier, Pair, Pre-Owned

$5,695.00

27 Days Left

McIntosh MC-275 MK VI Mint condition sold as single or ...

Just in on trade is a pair of McIntosh 275mk VI these amps are absolutely perfect. Asking price of 5000 is for each amps. Please call with any question at 7737201542

Just in on trade is a pair of McIntosh 275mk VI these amps are absolutely per...

$5,000.00

27 Days Left

Absolare Passion 845 Monoblocks Altius model

Here is something rarely if ever seen on Agon. These are a gorgeous pair of parallel single ended 845 amplifiers from Absolare, but these are not the standard model. Absolare has three levels within the 845 monoblock line, the passion, the signature, and the Altius. Differences ...

Here is something rarely if ever seen on Agon. These are a gorgeous pai...

$35,000.00

Triode Lab 2A3-S Hommage 6H30 SuperTriode Edition 2022 ...

Brand new TRIODE LAB 2A3S Hommage. This is a truly special , one-make item. Made with NOS brand new Tango U-608 Output Transformers , NOS Brand new TAMURA Choke Transformer, and using our legendary 6H30 &quo...

Brand new TRIODE LAB 2A3S Hommage. This is a...

$4,500.00

Triode Lab 2A3RSR

Beautiful pair like new condition. Just come back from Jeff Place for review. This was built before all the costs went up double. The next pair will be north of $30,000 - 50,000 USD. This is our best shot with the 2A3 PSET design. The to...

Beautiful pair like new condition. Just come back from Jeff Pl...

$18,000.00

Triode Lab 2A3M-FFX 6H30/230-240V Avaliable

One-owner trade in, mint, as new. Triode Lab certified pre-owned. 3 years extended warranty. Finish in Triode Lab Copper. Free upgrade to the 2A3M-FFX "Supertriode" for those who prefer the 6H30. Shipping to be pay by and arrange by buyer....

One-owner trade in, mint, as new. Triode Lab certified pre-owned...

$7,000.00

Ayon Audio Epsilon Mono Amps Pure Class A- 240V model

one owner trade-in. Look and function flawlessly. Will ship in original wooden crates from factory. Must ship freight. Product Description Features & Design Full-featured true balanced vacuum tube mono power amplifie...

one owner trade-in. Look and function flawlessly. Will ship i...

$16,000.00

25 Days Left

Conrad Johnson ART mono

Up for sale is a pair of Conrad Johnson ART mono blocks with KT-120 tubes. series number 89 and 90 of 250, both amps are in good to excellent working condition. No hiss , hums or buss. No dint , dent or scratches. Purchased it used from the dealer in US five years ago ,have used it f...

Up for sale is a pair of Conrad Johnson ART mono blocks with KT-120 tubes. se...

$9,500.00

25 Days Left

PrimaLuna 400 Power Amp

In great shape.....not including tubes. Buyer pays shipping (will only ship to continental 48 states) if necessary and 3% PayPal fee.

In great shape.....not including tubes. Buyer pays ship...

$4,300.00

25 Days Left

Manley Studio Reference 240 Mono Blocks Re-tubed and S...

This offer is for a set of Manley Studio Reference 240’s. Both Amps were recently retuned from the service at Manley headquarter in Chino Ca. Come with original factory boxes and a copy of the Manley Service receipt. Also on order are new matching speaker binding posts ...

This offer is for a set of Manley Studio Reference 240&r...

$5,999.00

24 Days Left

Zesto Bia 120 Stereo Tube Power Amplifier (39553)

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$4,914.00

24 Days Left

Black Ice Audio FUSION 3502P Tube Amp by JOLIDA w/ Tung...

Black Ice Audio FUSION 3502P Tube Amp by JOLIDA w/ Tung-Sol KT-120's This Fusion 3502P amp was purchased from Rewind Audio in Los Angles who got it from the first owner. It is in immaculate condition, operates flawlessly, and comes with the stock power cable. Also will ...

Black Ice Audio FUSION 3502P Tube Amp by JOLIDA w/ Tung-Sol KT-120'...

$1,275.00

23 Days Left

Cary Audio V12R CAD-280-SA Stereo Tube Power Amplifier;...

...

$2,799.00

23 Days Left

Tektron Bendix 6094(EL84) Mono Blocs TK 6904M Ref

By far the best EL84 ever made-up The Bendix 6094! Using a different pin out configuration than the standard EL84 but having all weight slam and beloved EL84 sound-just way better. NOS Mullard EZ81 rectifiers included, NOS Britsh 12AX7’s included. Upgraded Olive wood cabinets. Fron...

By far the best EL84 ever made-up The Bendix 6094! Using a different pin o...

$3,950.00

23 Days Left

Amplifier Covers McIntosh, Audio Block Bel Canto, Quick...

Mono amps, Integrated amps, CD players & gear you would like covered. STEREO SQUARES DOT COM. Discounted price for two covers (mono design) Super seller, highest recommendation. irreproachable service. if only everyone offered this level of service. Super, super responsive. creates confidence...

Mono amps, Integrated amps, CD players & gear you would like covered. STE...

$275.00

21 Days Left

Audio Research GS150 low hours We Welcome Trades

For sale is a excellent condition audio research gs 150. Amp comes complete just like the day it left the factory. Please call with any question 7737201542

For sale is a excellent condition audio research gs 150. Amp comes complete j...

$10,999.00

21 Days Left

Ypsilon Electronics Aelius ii

Second user. Some small scratches and one ding. Perfect working condition. Crates etc. 240v.

Second user. Some small scratches and one ding. Perfect working condition....

$17,800.00

21 Days Left

McIntosh MC-225

MC225 Stereo Vacuum Tube Power Amplifier Excellent working and good cosmetic condition. 1x Power Amplifier, 1x original Owner's Manual, 1x previous repair document (stating the unit is working order at time of inspection (12/21)) **Service document states that at certain p...

MC225 Stereo Vacuum Tube Power Amplifier Excellent working and good co...

$3,400.00

20 Days Left

Audio Research Reference 150 SE Power Amplifier, Factor...

Simply put, the REF150 SE is a breakthrough in stereo power amp...

$9,495.00

20 Days Left

Atma-Sphere Nirvana Monoblocks (Ralph Karsten Masterpei...

A True End Game OTL Amplifier by Atma-Sphere Your chance to own a one of a kind OTL amplifier, Ralph Karsten True Master Piece with over 45 years of know...

A True End Game OTL Amplifier by Atma...

$38,000.00

20 Days Left

Audio Research VT-100 Tube Power Amp Good condition Ru...

A very good condition VT-100 tube amplifier. All Russian tubes in good condition and amp operates as it should.. do not have factory packaging But will cautiously pack for a safe trip.

A very good condition VT-100 tube amplifier. All Russian tubes in good condit...

$2,499.00

19 Days Left

Audio Research D-125 Tube Amplifier

Up for sale is a very clean Audio Research D-125 tube amplifier that looks and sounds excellent!! Do not have factory packaging but will Be carefully packed to ensure a safe journey.

Up for sale is a very clean Audio Research D-125 tube amplifier that looks an...

$1,999.00

19 Days Left

Atma-Sphere M-60 3.3

Offered by original owner, in truly "mint" condition, except for age, with all available Options, which add $3,110 to the Base Model Price of $7,900! Power Supply Boost V-Cap Copper Foil Teflon® coupling caps Caddock® resistor package

Offered by original owner, in truly "mint" condition, except for ag...

$6,450.00

19 Days Left

CLASS A 250 Watts per channel Tube Monoblocks by Canary...

DEAL ON DEMO! CANARY AUDIO M250 TUBE MONOBLOCKS: The latest Fully Balanced 250 Watts per channel in pure CLASS A with quad KT150 tubes. This ...

Contact for Price

18 Days Left

Manley Reference 440 watt monoblock (pair)

I have a pair of Reference Monoblocks, 440 watts each, manufactured by Manley Labs between 1994 and 1996. Serial numbers

I have a pair of Reference Monoblocks, 440 watts each, manufactured by Man...

$4,000.00

17 Days Left

PRICE DROP - VAC 300i/iQ Stereo Tube Amplifier (iQ Circ...

We have a very special piece here. This is a VAC 300i. The unit is 1 of 5 300i power amplifiers in the world that have been upgraded to the iQ auto-bias and protection circuitry, which is patented by VAC. We have a very close relationship with VAC. We brought this unit to the VA...

We have a very special piece here. This is a VAC 300i. The unit is 1 of 5 ...

$9,350.00

17 Days Left

Conrad Johnson Premier 8XS mono amplifiers - mint custo...

Buy with confidence at

$9,747.00

17 Days Left

Zesto Audio Eros 300 mono amps

A pair of Zesto Audio Eros 300 is available in excellent condition.Europe Voltage to 240 VPaypal please add 6 % more

A pair of Zesto Audio Eros 300 is available in excellent condition.Europe...

$17,400.00

Audio Research D-76a

SPECIFICATIONS: POWER OUTPUT 75 Watts per channel minimum RMS (both channels operating) into a 4, 8 or 16 ohm load from 20 Hz to 15 kHz with less than 1% total harmonic distortion INPUT SENSITIVITY 1.5 volts for rated output I...

SPECIFICATIONS: POWER OUTPUT 75 Watts per c...

$2,688.00

Audio Research GS150 Vacuum Tube Stereo Power Amplifier...

**This unit has been fully tested and works like new! The tubes have 398 hours on them! This unit will ship with the owner's manual, all original accessories, and will ship in it's original packaging! Check out the pictures and good luck!**

**This unit has been fully tested and works...

$9,750.00

David Berning Co 845 ZOTL Hi-Fi One edition

I am a registered Audiogon dealer. Website rbhifi1.com Questions /demo call Rick Brown at +1 612 817 1599. email: rbhifi1@gmail.com website: rbhifi1.com David Berning/Hi Fi One 845 ZOTL Reference mono-bloc...

I am a registered Audiogon dealer. Website rbhifi1.com ...

Contact for Price

Audio Research VT-200

The VT-200 was the flagship of the Audio Research line back in the late 90's, one of the last great tube amps. Audio Research followed this model with the VTM line, which was a bit more clinical (less tuby) sounding. Tons of power for any speaker setup. I've owned this amp for 8 years and...

The VT-200 was the flagship of the Audio Research line back in the late 90...

$3,800.00

Carver Crimson Red 275

Mint, two month old Bob Carver Crimson 275 Amp. Amp is in perfect cosmetic and functional condition and ships in original custom box whcih is sturdy and well designed, making safe shipping a breeze. I am moving to a larger, more expensive amp. This one...

Mint, two month old Bob Carver Crimson 275 Amp. Amp is in perf...

$2,150.00

LTA Z10 Stereo Tube Integrated Amplifier; Remote; Black...

...

$3,626.00

15 Days Left

Rogue Audio ST100 Stereo Tube Power Amplifier; ST-100; ...

...

$2,499.00

15 Days Left

TriangleART Reference Monoblock amplifier

Here is your chance to purchase wonderful TriangleArt Reference monoblock amplifier. This pair is in excellent condition and less than 500 hours usage on the tube, original owner trade back to upgraded to New model M100 amplifier. Here is some review about Reference am...

Here is your chance to purchase wonderful TriangleArt Reference monoblock amp...

$7,999.00

Convergent Audio Technology JL3 Signature MKII Mono Amp...

...

$10,237.00

Mcintosh MC-240

Fully tested and perfectly operational MC240 amp. Very good condition. Selling this item for our sister company The Sound Advantage. No trades. Price plus actual shipping charges. Will double box for safety. Ple...

Fully tested and perfectly operational MC240 amp. Very good conditio...

$3,499.00

Quicksilver Horn Mono Amplifiers (pair of Prototype Hor...

Up for sale is a pair of Quicksilver Horn Prototype Mono Amplifiers Model: Horn Mono (Prototypes from Mike Sanders' own personal collection.) Color: Black ...

$1,499.00

Aric Audio Super KT88 120 SE Amp

Super KT88 120 SE Amp – Original price $3875 (List price $2550) - About a year old - Includes a set of tubes PREFER LOCAL PICKUP (Hartford, CT area)

Super KT88 120 SE Amp – Original price $3875 (List price $2550) ...

$2,550.00

Jadis DA-7 Power Amp NOS KT90 Tubes

Jadis DA-7 Power Amp with NOS EI KT90 Tubes - provided and installed/biased by Jadis. This amp, despite being marked as Defy-7, is actually Da-7 (The latest Defy 7 is called DA-7 and retails for $13,900 The previous, older Defy 7 was called DA-7 luxe and retailed for $10, 995 - but th...

Jadis DA-7 Power Amp with NOS EI KT90 Tubes - provided and installed/bi...

$6,500.00

Antique Sound Labs, Hurricane DT Monoblocks

It's rare that a product fully lives up to the "hype" but, in this unique case, the Antique Sound Labs, Hurricane DT monoblocks we have here at the shop absolutely obliterate it! These valve amps are extraordinary in every way...

It's rare that a...

$3,299.00

Amplifier Covers McIntosh, Audio Block Bel Canto, Quick...

Mono amps, Integrated amps, CD players & gear you would like covered. STE...

$305.00

Kondo AudioNote Japan Gakuoh - sealed

For sale a Kondo Gakouh PSE from 2017 but never unpacked as the owner after he bought them moved to another house. We have a new matching Kondo M77 as well. Contact up for your special price.Free conversion to 115v. The Highend broker stands in for th...

For sale a Kondo Gakouh PSE from 2017 but never unpacked as the owner afte...

$56,700.00

Audio Classics 9b

Audio Classics Model 9B KT-88 Stereo/ Mono Tube Amplifier built by VAC This is a Demo Unit with approximately 4 hours of run-time on it. For sale we are offering a beautiful Audio Classics Model 9B KT-88 Vacuum Tube powered amplifier. Original MSRP: $9999.00 ...

Audio Classics Model 9B KT-88 Stereo/ Mono Tube Amplifier built by VAC

$4,399.00

12 Days Left

WANTED NEW YORK METRO VTL MB-450 Series III Signature W...

WANTED VTL MB450 SERIES 3 PREFER PICKUP IN NYC METRO FAST HASSEL FREE TRANSACTION FOR THE RIGHT PRICE. THANK YOU

WANTED VTL MB450 SERIES 3 PREFER PICKUP IN NYC METRO FAST HASSEL FRE...

$99.99

12 Days Left

Conrad Johnson ART27a

Conrad Johnson ART27A Power Amplifier Newly designed in 2018, The factory considers this their best sounding amplifier Minimal Use Comes In Factory Crate We have over 1300 used items listed at HIGHPERFORMANCESTEREO.COM

Conrad Johnson ART27A Power Amplifier Newly designed in 2018, T...

$15,700.00