HIFIMAN HE-R7DX+DROP+JM OCD MOD Closed-Back Modded By JM

Listing ID: 25434

For Sale  149.00 USD

Condition

New in box

Negotiability

Firm

Ships to

1. United States of America

Just received these on Saturday 5--7- and I got to work on modding I am charging $25 for the mod- I just want someone to enjoy the new sound of how a great modification can make even a $149 headphone from Drop sound.... refined much more than my...

Listed by: John Massaria (28)

Listed: 2022-05-09

Last edited: 2022-05-10

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HIFIMAN HE-R7DX+DROP+JM MOD Closed-Back Modded By JM

Listing ID: 24813

For Sale  17.76 USD

Condition

New in box

Negotiability

Firm

Ships to

1. North America

Just received these today on FRIDAY 4-29-21- and I got to work on modding I am charging zero for the mod- I just want someone to enjoy the new sound of how a great modification can make even a $149 headphone from Drop sound.... refined much more...

Listed by: John Massaria (28)

Listed: 2022-04-29

Last edited: 2022-05-04

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Make offer! Telefunken G73-R New In Bag tested matched 100% Authentic

Listing ID: 24557

For Sale  17.76 USD

Condition

New in box

Negotiability

Firm

Ships to

1. United States of America

These sell for $479-499+tax and plus shipping each else where These are the black label as seen in pics 100% Authentic and NEW never used only tested and hyper matched perfect I have two sets - I am keeping one set for myself - they are that...

Listed by: John Massaria (28)

Listed: 2022-04-25

Last edited: 2022-05-02

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HIFIMAN HE-R7DX+DROP+JM MOD Closed-Back Modded By JM

Listing ID: 24228

For Sale  19.84 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. North America

Just received these today on 4-19-21- and I got to work on modding I am charging zero for the mod- I just want someone to enjoy the new sound of how a great modification can make even a $149 headphone from Drop sound.... Heavily Modified see...

Listed by: John Massaria (28)

Listed: 2022-04-19

Last edited: 2022-05-10

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LOWEST Price ICE-Power 1000Wx2 Mono Block In Glass and Brass By Perfect8 Speaker Company

Listing ID: 23576

For Sale  899.00 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. United States of America

Ice 1000 Mono Block In Glass and Brass By Perfect8 Speaker Company Similar to the ICE 1000 1000Wx1 X Two AMPS BUT MUCH NICER CASE - this is a custom amp D Amp Based on The Ice 1000- designed and made for the $400,000 "The Force" from Perfect8...

Listed by: John Massaria (28)

Listed: 2022-04-08

Last edited: 2022-04-22

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Tripp-Lite IBAR 12 15A Power Strip Surge and Noise Suppressor NOT LIKE OTHER CHEAP ONES

Listing ID: 23054

For Sale  19.84 USD

Condition

Good

Negotiability

Or best offer

Ships to

1. North America

DO NOT CONFUSE THIS WITH THE CHEAPER POWER STRIPS BY TRIPP LITE THIS ONE HAS REAL FIRST GRADE OUTLETS!!!!!!!!!!!!!!!!!!!!!! Selling my slightly used (see pics) - has some marks on this tank built power strip - all outlets very tight! Perfect...

Listed by: John Massaria (28)

Listed: 2022-03-30

Last edited: 2022-05-03

Closed

12AU7A RCAx4 SUPER μMhos ratings EVEN FOR NIB THIS IS HIGHEST I EVER SEEN

Listing ID: 22628

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. United States of America

FUN FACT: A higher rated transconductance measuring tube, will distort the signal less (signal stays cleaner) than a lower rated transconductance tube... which will distort the signal more. INSANE RATING! THIS IS THE HIGHEST 12AU7A TUBE WITH...

Listed by: John Massaria (28)

Listed: 2022-03-23

Last edited: 2022-05-03

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SOLD

Listing ID: 22547

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Firm

Ships to

1. United States of America

UP FOR SALE - The Tungsram ECC82 MIL Red serial DOUBLE BAR GETTER! VERY RARE! scrape the money together you will not regret this amazing matched NOS NIB tube - a unicorn tube with double supports! just came in today and unfortunately my review...

Listed by: John Massaria (28)

Listed: 2022-03-22

Last edited: 2022-03-26

Purchased

Kennerton GH40 Gjallahorn JM Edition Mk1

Listing ID: 22519

For Sale  17.76 USD

Condition

New in box

Negotiability

Or best offer

Ships to

1. United States of America

Brand new modified GH40 JM Edition Mk1 first edition one of one Uses special fiberglass mesh which helps expand sound stage inside wood ear cup behind driver and it uses special speaker dampening wool to enhance and taper the headphone beyond...

Listed by: John Massaria (28)

Listed: 2022-03-22

Last edited: 2022-03-22

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NIB NOS Single TESLA ecc802 Czechoslovakia 1964 YELLOW PRINT COPPER LONG PLATE Perfectly matched @2300x2 !!

Listing ID: 22481

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Firm

Ships to

1. North America

NIB NOS Single TESLA ecc802 Czechoslovakia 1964 YELLOW PRINT COPPER LONG PLATE Perfectly matched @2300x2 !! PERFECTLY MATCHED - 2300 uMhos/2300 uMhos Low Microphonics CODE: SJ relfects the year and month 10/1964 CODE PP: 12/61 Unsure which date...

Listed by: John Massaria (28)

Listed: 2022-03-21

Last edited: 2022-03-22

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NIB NOS RT (La RadioTechnique) France 1960 MIL SPEC 12AU7 matched dates and set

Listing ID: 22207

For Sale  17.76 USD

Condition

New in box

Negotiability

Firm

Ships to

1. United States of America

RT (La RadioTechnique) 1960 MIL SPEC 12AU7 SET PRICE way below for NIB tubes like this but I need the $$$ I'll include shipping to US contiguous area I had this tube NIB NOS - I only used for it review only for less than 4 hours so not even...

Listed by: John Massaria (28)

Listed: 2022-03-17

Last edited: 2022-03-19

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Kennerton GH50JM Mk2 Stablized Karelian Birch + 5 Different Ear Pads

Listing ID: 22094

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Firm

Ships to

1. United States of America

This is a very limited edition one of maybe 2 in the whole world like this (the only other like this is in Green Karelian Birch color) and this is the only Mk2 Blue Stabilized Karelian Birch version in the world. WHATS SPECIAL here is the fact...

Listed by: John Massaria (28)

Listed: 2022-03-15

Last edited: 2022-03-16

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Genuine Replacement Ear Pads Cushions for SENNHEISER HD650, HD600, HD580, HD660 S, HD565, HD545

Listing ID: 22081

For Sale  17.76 USD

Condition

New in box

Negotiability

Firm

Ships to

1. United States of America

Brand new Genuine Replacement Ear Pads Cushions for SENNHEISER HD650, HD600, HD580, HD660 S, HD565, HD545 They sell for $49 on line and $44 plus tax from Sennheiser direct Buyer gets brand new never used ear pads in Drop Box instead of the cheap...

Listed by: John Massaria (28)

Listed: 2022-03-15

Last edited: 2022-03-23

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Will play music for $$$ Matched NOS 5814A Siemens Germany "long plates and triple mica" copper grid (1973))

Listing ID: 21699

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. Anywhere

Will play music for $$$ Matched NOS 5814A Siemens Germany "long plates and triple mica" copper grid 1973 - regarded the crème de la crème of all 12au7 one of my favorites -worth every single gash darn penny- I weep at how organic and real this...

Listed by: John Massaria (28)

Listed: 2022-03-09

Last edited: 2022-03-23

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thank you I changed my mind!

Listing ID: 21736

For Sale  0.00 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. Anywhere

thank you I changed my mind!

Listed by: John Massaria (28)

Listed: 2022-03-09

Last edited: 2022-03-10

Closed

thank you I changed my mind!

Listing ID: 21524

For Sale  1.00 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. United States of America

thank you I changed my mind!

Listed by: John Massaria (28)

Listed: 2022-03-06

Last edited: 2022-03-10

Closed

Nothing here

Listing ID: 21319

For Sale  1.00 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. North America

Gone like the wind

Listed by: John Massaria (28)

Listed: 2022-03-03

Last edited: 2022-03-10

Closed

BRIMAR CV4003 England NOS Matched Nearly perfect Logos

Listing ID: 21324

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. North America

BRIMAR CV4003/12AU7 – Made In England I ordered 12 tube pairs for my Prautes amp these were top 3 in my bunch but I have duplicates so these were used for like an hour since I bought them- I bought these since they are considered best of best...

Listed by: John Massaria (28)

Listed: 2022-03-03

Last edited: 2022-03-23

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Quicksilver Headphone Amp With V Reference Cap Upgrade

Listing ID: 20596

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. United States of America

MY REVIEW ON THE AMP IS HERE- I ONLY HAD THIS FOR ONE WEEK- https://www.head-fi.org/showcase/quicksilver-audio-headphone-class-a-triode-transformer-coupled-single-ended.25701/ NO MARKS OR SCRATCHES I am now selling my Quicksilver Headphone Amp- I...

Listed by: John Massaria (28)

Listed: 2022-02-19

Last edited: 2022-03-23

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WOW! 3 pairs Of 100MM Ear Pads $65 gets ALL

Listing ID: 19216

For Sale  17.76 USD

Condition

Excellent/Like new

Negotiability

Or best offer

Ships to

1. North America

100mm Non Perforated All lambskin Leather Ear cushions are hand-made from soft lambskin from a remote highland region in Northern Caucasus 3 Sets of Amazing hand Made Ear pads For those who like to tune their headphones differently 1 Set is All...

Listed by: John Massaria (28)

Listed: 2022-01-30

Last edited: 2022-03-23

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