**** SHIPPING TO USA lower 48 States ONLY To eBay Verified address NO PO BOXES ,  ***
3 shipping options Economy USPS,UPS,FedEx, Insured, Adult Signature required upon delivery. Pick the lowest cost rate to your zip code and we will make it happen.

IF YOU ARE AN INTERNATIONAL BUYER PLEASE USE A USA
BASE FREIGHT FORWARDING COMPANY  ( for Asia several companies near LA,CA. or better near Portland, Oregon (no state sales tax), for UK/EU and
countries East of USA use Freight Forwarders in Wilmington, Delaware USA (NO  State sales exports Tax )... these freight forwarder will be your lowest cost shipping options.  

**** FREE LOCAL PICKUP with Demo before Purchase, by Appointment *****
**** Pickup in Cutler Bay, FL. 33190 (Miami-Dade County)
**** THIS UNIT IS CROSS LISTED On Multiple Sites***

**** SHIPPING TO USA lower 48 States ONLY To eBay Verified address NO PO BOXES ,  ***
3 shipping options Economy USPS,UPS,FedEx, Insured, Adult Signature required upon delivery. Pick the lowest cost rate to your zip code and we will make it happen.

PLEASE READ THIS ENTIRE DESCRIPTION BEFORE YOU BUY. Ask Questions before you buy. We respond to eBay msgs quickly. This is a Very Long Detailed Description ( NO A/I listing descriptions used here )



The Price Reflects a Fresh Clean Recently Restored Unit FISHER 70AZ with 
Very Strong TV7D/U Tested Vintage Premium USA/Great Britain Vacuum Tubes

Shipping :  
will be calculated by Well Packaged New U-LINE/U-HAUL Heavy Duty Box lined inside with extra insulated with Styrofoam.  Full value insurance is included. We will contact you at time of purchase before shipping
to verify with you your shipping Address and that an adult signature at you delivery address will be required with an Estimated delivery date.

 
This eBay sale is for ONE(1) Newly Electronically Restored 
 Fisher 70AZ Mono Block Amplifier ( ca. 1956 # 51458) with Premium 
USA/Great Britain Vintage Tubes with Original Z-MATIC 'outboard' Variable 
Dampening Speaker Impendence Matching Control
with original Plugin, Wiring, Pot, Bezel ('The Fisher') & Fisher Knob.
Also included are printed copies of the Original Fisher 70AZ
Documentation: "User Installation and Operating Instructions with Specs & 
Operation Graphs (Ultra-Linear Output) with full page Schematic(SKU) & Full Original Parts List".

This unit is in excellent Sonic/ Audio Response working condition.
Re-Tested Sonically for 20+hours after restoration(09/06/25) completed .

Side Panel A/B Switch Support for 8 & 16 Ohm speaker output, 
however the "Z-Matic" control will support various 6,10,12,15 Ohm (EURO Philips/Telefunken/Grundig/Saba ect-Radio Speakers that have been Repurposed for
for Single Ended Baffles). Also high-quality effcient special 15 ohm speakers(many famous UK/EU highly-efficient speaker ie : Klangfilm. Philips,Goodmans, Celestion/Rola, Stromberg-Carlson, Vitavox, Charwell, some Models of early Tannoy speakers 'Silver's, Wharfedale W60/70/90's and many more manufacturers.)
specialty speakers by using the Z-Matic control as stated in the Fisher 70AZ docs included.

High Output : 25-Watts Power Output at very Low THD Conservative (< 0.5% distortion),
Nominal Peak at 50-Watts Power Out Still Low THD (<1%).  
(See pics of the full specs for more details including graphs of Ultra-Linear Frequency response)

Five(5) VINTAGE USA/Great Britain Tube/Valve Complement :
( All Tubes tested on a Dan Nelson Recently Restored, Upgraded & Calibrated TV7D/U tester
for Transconductance(Gm) & Plate Current Emissions in mA)
2x TUNG-SOL 5881 ca. 1955 &1962 Dated
( Power Output Tubes , 25 Watts in Push Pull, Matched Emissions as per Fisher Specs in docs), 
Matched 5881 pair Strong for Gm & mA(Matched at both 46.0mA Plate Current Emissions 
& at TV7/U meter reading of 40.0/41.4 Transconductance(Gm) we ave. NOS=42
1955 Tung-Sol JAN CTL- 5881 Transconductance(Gm)=40.0/25=min at 46.0ma Plate Current emissions
1962  Tung-Sol 5881 Branded for for GE '188-5' '62-48' 41.4/25 at 46.0mA emissions
1x 1960's RCA 5V4G 'NR' 'ACA' ( tested balanced factory NOS 60/60)
1x 1960s RCA 12AU7A Clear Top Side 'D' Getter (tested balanced factory NOS)
1x 1960 Mullard-Blackburn etched 'B0K2' inked 'Great Britain' 4-seamed top, Top-Side Ring/Halo
getter branded for GE 12AT7 (tested balanced factory NOS)

This Fisher 70AZ amplifier (serial number # 51458) is in Very Good cosmetic
 condition considering this amp is from 1956-57 era
 so it is at least 68years old. We just detailed/cleaned the Chassis & PS/OPT with Flitz
polymer polish and removed oxidation so it shines. All tube sockets have been clean
with CRC QD Electronic Cleaner then with Deoxit 5 as where the A/B Switch and Z-Matic
Pot and Hum Adjustment pot.

The Power Supply( Model T-508-116) and the Output Transformer Model T-508-117)  are original with the
 OPT(very Ultra-Linear in this Williamson Circuit
amplifier( see pics of graphs) .  There are NO dents in both PS/OPT. Only the tops have Scuff marking some
missing original pait.
 The 2-Prong power chord is original and ground to chassis.

-  Cosmetic's: The transformer casings have their original paint, nice on 4 sides each but both 
tops of the PS/OPT are scuffed up on the top side with missing pairt ( see pics )
this was a very common issue with the Fisher mono blocks as the PS/OPT are highest in height
 and get scuffed up when moved.  If you want cosmetic perfection, just remove tubes, mask off the unit and
repaint both tops of the PS & Opt transformers. 
FYI, Cosmetics do not produce sound..We made an initial pass detailing the oxidation off the chassis with Flitz
using Microfiber soft cloth and large cotton Q-Tips.  A deep additional Cleaning of the chassis with Flitz is needed
also with a careful repainting the Tops of the PS & OPT.

-  Restoration Providence: The amp was slowly brought up on a Variac and sounded good after initial acquisition with the original PIO, Ceramic & Mica caps, & Electrolytics in the Tin Cans & the original (AB=Allen-Bradley)resistors. -  However  once on the bench we tested all the caps & resistors and found many caps were just over the edge of the spec'ed tolerances and drifting or a few were way out of tolerance by at least 30%.  The two PS Filter cans electrolytic's ( C11 A/B 40/40MFD and C12 A/B 40/40 at 450V were replaces as well with NEW high quality <10% tolerance caps . Others replaced  are vintage NOS Mallory/Sprague tone caps  that we had in stock so the amp should not fail in the near future. 

You'll notice that most capacitors and have been replaced ( see all PICS. in detail for providence)

About us: We are Honest Sellers and Great Communicators  27+year seller to Happy Customers on ebay with 100%+ feedback on Vintage Electronics[Tubes, Amps/PreAmps/Receivers/Radios/Speakers and other tube type audio Gear): We have sold analog tube audio units since PRE-Ebay DAYS from the late 1970's. Please read our feedback from very recent sales( at the end of this listing) of Tube Audio PreAmps ( Dyna PAS-2, Valve Audio Labs MP-L1S MKII, Fisher 80T Mono AM/FM-PreAmp ), Receivers( Fisher 400, 500C, 800B), Int Amps (Sherwood 5000 V1, Harman Kardon A30K/A300, Eico ST-40, Fisher X-1000/X-101), Tube Type Analog Tuners(AM/FM) stereo Radios( SCOTT LK-110 MPX Stereomaster, Fisher Am/Fm Stereophonic R-4000( 101-R) AM/FM Tuner[Radio] ).
Please contact us before you purchase if you have < 5+ eBay feedbacks. Our buyers tend to be higher-end audiophiles audio HiFi collectors & Radio collectors. We always welcome 'newbies' to the tube audio world but if this is your 1st tube amp or tube audio purchase please either have a friend who has exp. with tube audio to help and assist you in setup and proper connections OR PRACTICE EXCELLENT Communications with us and we will help you in the Setup Process. Our 50+yrs exp. in vintage tube audio gear indicates that 99% of all issues can be resolved by "Reading and Understanding the User/Operations Manual 1st to insure proper setup, connections & grounding( hum-noise-feedback issues).  Grounding issues ( Hum, feedback, Microphonics ) are always problematic with Turntables/ Record Players which require proper TT placement / tracking alignment, proper grounding of the ground wire inside the TT for continuity to a verified ground proper grounding source. Tube Shields on vacuum tubes especially in the preAmp section are needed to cancel Radio Frequency(RF-IF) noise and feedback. So there are many things to lean in terms of getting the right setup and sound from a TT Phono stage.  Its a labor of Love when you own a Turntable. We have owned, setup * Operated maybe over 400+ turntables over 50+ years and each model has different issues on proper set up.
However  once everything is setup properly the audio response from Vinyl is absolutely amazing.



UPFRONT DISCLAIMER: Unfortunately Due to Past experiences with certain eBAY buyers 'bad apples' who SWAP OUT PARTS AND TRY TO RETURN BANDITs  from ebay audio units sales that we have honestly described for tube audio units              We are only offering:

                                        "NO DOA"-NO Dead on Arrival - Working as Described and as Tested before shipping: " - SOLD FOR PARTS AND FUTURE REPAIRS WHEN AND IF NEEDED.   ALL SALES ARE FINAL WITH NO RETURNS AND NO REFUNDS  AND NO WARRANTEE - Please READ FULL DESCRIPTION below" .  ALL PARTS AND TUBES ARE MARKED and IDENTIFIABLE in PICs and PCB boards and chassis assembly marked Invisible uv inked.


Notes when buying Used Electronics : When buying 60+ plus year old electronic equipment that has not had all parts replaced with new parts there is always the possibility with failure to the 60+ year old part/s at any time. Some of the electronic part/s may continue for another 60 years without need of replacement and some electronic part/s may fail a few days after you start using the item. The item will arrive to you in the working condition as described in the listing but I am not responsible for what might happen to the electronics part/s after the item is received in working order due to the age of the electronic part/s.




( Thank you to )
Radiomuseum Fisher 70AZ amplifier ( change 'dot' to a period '.' in the links below)
radiomuseum.org/r/fisher_70_az70az dot html

HifiEngine : (Free download in PDF format just register for free)
Documentation: Fisher 70AZ "User Installation and Operating Instructions and Specs
with full page SKU"
hifiengine dot com/manual_library/fisher/70-az dot shtml

FISHER 70AZ Audio Mono-Block Amplifier
  • Number of Tubes
  • 5
  • Valves / Tubes
  •     
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 105-125 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 25 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 70-AZ - Fisher Radio; New York NY
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 14.75 x 6.2 x 4.2 inch / 375 x 157 x 107 mm
  • Notes
  • Basic amplifier, with 'Z-Matic' variable damping control.

  • Price in first year of sale
  • 100.00 $
  • Literature/Schematics (1)
  • Allied Radio Catalog Nº 150, 1956


SHIPPING:

NET SIZE (APPROX.) : 15" W X 7" H x5" D
NET WEIGHT :  22lbs

Amp Ships in a new Heavy Duty UHAUL/ULINE Electronics Box
Box size ( 2" foam on all 6 internal sides )
Dims:  20 x 12 x 10
Weight : 30lbs


Shipping will be calculated by Well Packaged New U-LINE/U-HAUL Heavy Duty Box lined inside with extra insulated with Styrofoam.  Full value insurance is included. We will contact you at time of purchase before shipping
to verify with you that an adult signature at you delivery address will be required with an Estimated delivery date.

THREE (3) Ground Options, USPS ground advantage, UPS economy ground & FedEx economy ground Home Delivery. JUST SELECT THE LOWEST COST SHIPPER.
Being offered at a fair "Complete Restoration " Buy it Now Price. 
WE HAVE MANY YEARS OF EXPERIENCE SHIPPING FRAGILE ELECTRONICS  VACUUM TUBES AND  SPEAKERS.
net dims: 15.W X :" D X 7"H
shipped box dims:  20"W x 10" X 12"H
shipped box weight: 30lbs (very well packaged for shipping)

We will select either of 3 shippers USPS, FedEx Ground ,(FedEx Economy Ground Home Delivery) or UPS Ground, which ever is lowest cost at the time of purchase.
Tubes & Tube shields will be pulled and packed well inside  a separate box atop the amp.


PLEASE READ Our Last 30+days  100% + eBay 
Feedback

recent feedback (100%) on Audio Units Sold :

Buyer: hifirelic (144)
US $449.95
Verified purchase
Past month

Item was as described, communication excellent, and shipped quickly. I highly recommend this seller. Thank you!!
Clean Fresh RESTORE SHERWOOD S-5000 Stereo Tube Int. Amp (Vtg. US/EU Tubes) (#306326293145)

Best communication of any seller. The packaging was very well done and shipping costs were quite reasonable. 5 STAR
Clean FRESH RESTORE 1963 Heathkit AA-100 Tube 7591 GZ34 Stereo Int Amplifier (#306283891973)

Buyer: hamsandwich420 (604)
US $599.00
Verified purchase
Past 6 months

US $349.95
Verified purchase




Past 6 months
Everything was what I was expecting, except for the updates and communication- they were way above what I expected, I would buy from him again
Newly RESTORED Fisher 400 FM Stereo Tube Receiver w/Exc Tested Tubes (#306218808602)


Buyer: stevcolema_8 (5)
US $399.95
Verified purchase
Past 6 months

Buyer: scheckel01 (3593)
US $269.00
Verified purchase
Past 6 months
Follow-up from: scheckel01Left within past 6 months.
Thank you very much. This purchase was one of the best purchases I've made in years. The expert rebuild was worth the price I payed. I've had time to listen to it for some time and couldn't be happier with it. Highly recommended seller.