This was tested by a tech and works without issue.

Dynaco DYNA PAS-3X Stereo Tube Preamp Preamplifier - Original Telefunken Tubes. Unit powers on. Vacuum tubes appear to be in great condition. My shipping time is set to go out within 3 business days, I make every attempt to get items out as quickly as possible, most are at the shipping provider the next day. 3 day handling is more to give me a window to to work with as this is a second job on top of trying to spend time with family. I appreciate you checking out my listing. I will combine shipping on most items. Please wait for an invoice if purchasing multiple items. I will send a combined shipping quote with all of the items purchased with appropriate packing materials. If you have any issue with a purchase, please reach out to me. I try to package things so their bomb proof, but USPS/UPS/Fedex are magicians when it comes to breaking things. If an item arrives in a condition that you don’t expect, or my pictures failed to show a defect, please let me know. I try my best to accurately describe and take pictures of item defects, but things can get by me from time to time. I want all of my buyers to be happy with their purchases. If you have any questions or would like additional pictures, please send me a message. I will be more than happy to provide more detailed pictures or condition descriptions. In the end, your questions make me better at capturing item details that I may have missed when originally listing an item for sale. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying

This is model PAS-2 tube preamplifier.Overall good physical condition with only rusty trace on front (see pics).Found in all original condition, not modified. Has been tested with Technics Turntable, Denon Power Amplifier and KEF Chorale speakers you can see on video.It works and all switches, controls seems to be properly functioning. Tubes are vintage and newer: RCA, GE, Sovtek and Tung-Sol.I have Dan Nelson calibrated TV7 tube tester, so if you wish I may check each tube.I think this one may be a good candidate for upgrades and modifications lately available.For sale AS-IS because of fragile nature of vintage electronics.________________________________________________________________________Will be well packed and shipped by UPS or USPS to any US48 only.Sorry , no shipping overseas.Local pickup welcome.Calculated S&H to any US48 only.Thank you

Ultra-small volume dynamic microphone preamplifier board, two-channel design, suitable for a single lithium battery-powered, using AD828 fever op amp chip, suitable for low voltage power supply (3.7-15V). Note: This microphone amplifier board without power regulator circuit, can only use the battery or linear power supply, can not use switching power supply, otherwise there will be interference. Working Voltage: DC 3.7V-15V Board Size: 33mm x 20mm (L*W) Notice: If you only used one channel, the other channel needs to short-circuit the input with GND, To avoid interference with the signal crosstalk. Packing List: 1pcs x AD828 Stereo Dynamic Microphone Preamplifier BoardOn 17-May-2023 at 11:51:39 BST, seller added the following information:

Here we have a DYNACO PAT-4 Stereo Preamplifier Assembly & Operation Manual ORIGINAL I have more than one of these and they are all originals. Because manuals are subject to copying, no returns are accepted. Thank you for looking

Ultra-small volume dynamic microphone preamplifier board, two-channel design, suitable for a single lithium battery-powered, using AD828 fever op amp chip, suitable for low voltage power supply (3.7-15V). Note: This microphone amplifier board without power regulator circuit, can only use the battery or linear power supply, can not use switching power supply, otherwise there will be interference. Working Voltage: DC 3.7V-15V Board Size: 33mm x 20mm (L*W) Notice: If you only used one channel, the other channel needs to short-circuit the input with GND, To avoid interference with the signal crosstalk. Packing List: 1pcs x AD828 Stereo Dynamic Microphone Preamplifier BoardOn 15-May-2023 at 02:07:07 BST, seller added the following information:

Offered here is a very nice, desirable, old Hoffman stereo preamp removed from a console. Comes with all its tubes. Unit is as found untested sold for parts or repair. Please see all pics for condition. Unit is being offered with a low bid, so please bid accordingly. Thanks for looking. USA LOWER 48 STATES SHIPPING ONLY. Up to 5 days handling time. DUE TO CHANCE OF MISUSE OR ABUSE AND BEING VINTAGE ELECTRONIC ITEM, WE DO NOT DO RETURNS. SOLD AS-IS, AS FOUND. PAYMENT DUE AT AUCTION END. Thanks

Dynaco PAS-4 Stereo Tube PreAmplifier W/ Manual Unit was working for short time then later tried to turn on and nothing no power. Cosmetic condition very good and very clean inside. Selling AS-IS for Parts or Repair. On Jun-12-23 at 17:14:12 PDT, seller added the following information: Found fuse and it was blowm.On Jun-15-23 at 07:32:40 PDT, seller added the following information: Preamp fuse blew after about a half hour into testing, power was ok  then fuse blew most likely because i did not re energize tubes slowly with a variac.  The preamp was on shelf in storage for many years.

Offered here is a very nice, desirable, old Hoffman stereo preamp removed from a console. Comes with all its tubes. Unit is as found untested sold for parts or repair. Please see all pics for condition. Unit is being offered with a low bid, so please bid accordingly. Thanks for looking. USA LOWER 48 STATES SHIPPING ONLY. Up to 5 days handling time. DUE TO CHANCE OF MISUSE OR ABUSE AND BEING VINTAGE ELECTRONIC ITEM, WE DO NOT DO RETURNS. SOLD AS-IS, AS FOUND. PAYMENT DUE AT AUCTION END. Thanks

This is a great looking and fully functional PAS 2 preamplifier. The PAS 2 & PAS 3 are the same units other than the faceplate & knobs. This is not a 3X however. All tubes are strong testing older US 12AX7s. The 12X4 is an original Dynaco labeled tube. This unit is not factory wired but a well built kit version. All inputs tested and sounds great. Controls and switches were recently cleaned for static free operation. Power light indicator works. All knobs are original and have the usual patina to show it! Tubes will be removed and bubble wrapped for safe transit. Preamp will be fully insured when shipped as well.

Vintage Dynaco PAT-4 Stereo Preamplifier READ DESCRIPTION — FOR PARTS. vintage selling for parts light turn on no further testing is done what you see is what you get thanks for looking.

Vintage Dynaco Dynakit PAS-2 Tube Stereo Preamplifier Untested Not Plugged In. Please note one side screw is missing. See pictures for derails. Found the unit (along with 2 other same vintage same brand all together) in a storage container. I do not have the proper test equipment (variac scope ETC) to properly test. This unit should be cleaned and tested before using no guarantees, no returns, and pictures for details. The unit looks great for its age no rust or weakness in chassis. Looks to have all tubes in place. No attempt at cleaning or refurbishing has been tried. Unit is as found.

Offered here is a very nice, desirable, old Hoffman stereo preamp removed from a console. Comes with all its tubes. Unit is as found untested sold for parts or repair. Please see all pics for condition. Unit is being offered with a low bid, so please bid accordingly. Thanks for looking. USA LOWER 48 STATES SHIPPING ONLY. Up to 5 days handling time. DUE TO CHANCE OF MISUSE OR ABUSE AND BEING VINTAGE ELECTRONIC ITEM, WE DO NOT DO RETURNS. SOLD AS-IS, AS FOUND. PAYMENT DUE AT AUCTION END. Thanks

Condition: Nice clean unit from a non smoking environment. Cabinet screws are not original & rectifier tube has been upgraded to transistor. Tested: I recently obtained from an estate sale. I tried it out as shown in the video and it performed very nicely! RCA tubes were checked and are of good quality.

Here we have a DYNACO PAT-4 Stereo Preamplifier Assembly & Operation Manual ORIGINAL I have more than one of these and they are all originals. Because manuals are subject to copying, no returns are accepted. Thank you for looking

Vintage Dynaco Stereo Preamplifier PAT-4 FACE PLATE Used, with a few scratches, but still good shape. Ships out within 1 business day.

AD828 Stereo Dynamic Microphone Preamplifier Board MIC Preamp Module for 3.8V Working voltage:DC3.7V-15V Ultra-small volume dynamic microphone preamplifier board,two-channel design,suitable for a single lithium battery-powered,using AD828 fever op amp chip,suitable for low voltage power supply (3.7-15V) Note:This microphone amplifier board without power regulator circuit,can only use the or linear power supply,can not use switching power supply,otherwise there will be interference If you only used one channel,the other channel needs to short-circuit the input with GND,To avoid interference with the signal crosstalk Size:3.2x2cm/1.3x0.79inch Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Packing List: 1x AD828 Stereo Dynamic Microphone Preamplifier Board