Tuesday, December 20, 2016

Limited Edition Peerless TFA-2004 Mexico with Nickel Pinstripes

3K parafeed single ended primary. 4, 8, and 16 ohm secondaries. MOL of >8 watts @ 30hz. All teflon insulation on the inside. All silver bearing solder connections. Color coded mil spec teflon lead wires. Elevated solid brass bell ends (other choices of bell ends available). All brass hardware. Triple high gloss clear coat polyurethane finish.

Three pairs available. Each is different. Have M6/Ni pinstripe, M4/Ni pinstripe

and the third pair is especially unique and was very difficult to build. This third pair uses four different laminations-- hence quad mu--- M6, M4, M3 and nickel. The higher perm materials are stacked toward the middle and are mirror imaged in pairs.

These are available for sale... and in time to slide right under your Christmas tree.

Prices starting at $400 a pair. Please send inquiries to acrosound@aol.com.

Tuesday, September 13, 2016

R-162.5 hookup

R-162.5 hookup

#1 primary start
#2 primary finish

#3 275 volts
#4 center tap
#5 275 volts
hv winding current capacity is 40 madc

6-7-8 is 6.3 vct at 2 Arms

9-10 is 2.5 volts at 4  Arms

SH is electrostatic shield

Sunday, July 17, 2016


All of the items listed below are finished products, ready to ship.
Pricing is "per pair"

Quantities are limited to what is on hand.

Preamp (small signal) outputs;

B7-5K M4 steel channels $120 (one pair)
B7-5K NI steel channels $150 (two pairs)
B7-15K M4 steel channels $120 (one pair)

Input trans (isolate source from load, used in Ingot passive pre)

B7-10k:10k NI special high end Mexico model Hi/Low NI stack brass
channels.This is the highest build quality/specification that we have
done to date on these inputs. $400 (two pairs)

Grid chokes;

BCP-16 GC high nickel in steel channel frames $160 (three pairs)

Plate chokes

BCP-14 10ma/100H brass channels $120 (two pairs)
BCP-15 40ma/50H steel channel frames $125 (one pair)
EXO-001 20ma/100H $150 steel channels $150 (two pairs)

Parafeed outputs;

EXO-35 NI 2500:16 ohms 3 watts brass channels $200 (one pair)
EXO-45 M3 5000:8 ohms 3 watts brass channels $200 (one pair)

Email me with your reservations at acrosound@aol.com

Shipping extra. Will endeavor to ship your goodies within two or three business days after receipt of your order and payment.

PayPal (domestic) ok. International please inquire.


Tuesday, June 07, 2016


A pair of DS-050 outputs in-process with mirror imaged air gap locations

Thursday, April 07, 2016

Super Rare Wavelength AUDIO SOLE 845 /300B 25w tube amplifiers

Here is an incredible pair of wavelength audio 25w 845/300B amplifiers with insanely huge custom wound transformers by Magnequest (peerless) in excellent condition.
These amps are Important not only because they were the esteemed Gordon's Rankins first SET amplifiers but also the first sold at Don Garbers now famous FI on watt st. In NYC. As far as I know Gordon only produced one pair of these as they were incredibly expensive to make. The amps originally sold for around 20k at FI in the early 90s and in my talk with Gordon he estimated they would be worth and sell for well over 30k new in 2015. These have silver kimber Kable throughout and all parts are of the absolute highest quality. Tubes are 845, Dual 5R4 rectifiers per chassis, 300B driver and 6SL7 input tube. These are not only a piece of history they are probably the greatest 845 amps ever made. The amps weigh around 75lbs each because of the absolutely massive Magnequest transformers local pick up or deliver within 150 miles is preferred but I will also ship fully insured. I have these for sale in other places so they may be taken down at any time.

Wednesday, April 06, 2016

Saturday, April 02, 2016

CP 04-006s

CP 04-006+ in process. 10 madc at 175 H VLC (very low capacitance) twin coil construction mirror imaged noise canceling nom dcr of 425 ohms

CP 04-006 In process two units in brass channels

Sunday, January 03, 2016

NOS Valves' VRD Amplifier with MagneQuest iron!

Craig Ostby at NOS Valves dropped us a line to let us know he used some of our transformers in a VRD Amplifier he built for a customer and they were over the moon with the quality sound!

Craig himself said, "The HF response was so much better I could cut the feedback smoothing cap value in half without any nastiness with square wave performance. This is saying allot since the stock transformer is no slouch! More importantly to my ears this was a really nice improvement across the board."

After a couple days of listening, his customer had the following to say to Craig, who kindly shared with us! "The amps are like a religious experience man. Clear, clean, and flowing music. From top to bottom, sound is more even handed, more dimensional, and just plain sounds good. The stock transformers were somewhat rougher sounding and a bit tipped up or hot in the presence regions. I didn't really notice that until I heard these! Such important musical improvements these make. I am hearing the most realistic displays of depth I have ever heard out of 2 speakers. Absolutely fantastic. You done good, no doubt about it. Tell Mr. MagneQuest his transformers are fukin musical instruments."

Check out his setup: