SAE as an OEM
SAE also would build components for other electronics firm as an OEM. Here are the products I have found so far.

SAE & Clair Brothers
Probably the most known SAE collaboration, the Clair Brothers 2600 started out as an SAE 2500 amplifier modified to output 400 watts, a second bridge rectifier was added along with increased relay protection plus the bias was set higher. Later production runs also had an upgraded transformer and power supply. A consumer version was released in conjunction monikered as the "SAE 2600". The Clair Brothers unit had other modifications as compared to the consumer 2600 as listed below.

Fortune smiled upon me again when I found this Clair Brothers unit locally in excellent condition. From what I could gather, this unit was purchased for home stereo use and therefore did not suffer the indignities that other units had to suffer with life on the road. On the Clair Brothers unit, the "Solid State Stereo Power Amplifier" script was relocated from the top center of the face plate to below the "On/Power/Off" text. "Clair Brothers Audio Enterprises, Inc" in block text was silk screened on the top center of the faceplate. Another difference is power gain switching, one the Clair Brothers unit the gain control could be turned off or adjusted -6db, -3db or 0db. On the consumer 2600, the gain could not be turned off but adjusted -12db, -6db, -3db and 0db.

From the rear, you can see that the Clair Brothers 2600 had 1/4 phono jacks for the inputs where as the consumer 2600 had RCA jacks. Another difference is in case. The Clair Brothers unit had a three piece cover leaving the fan and cooling fins exposed. The consumer 2600 had a one piece cover which also covered the fan and cooling fins. On a side note, the starting serial number for the Clair Brothers is 25- indicating a 2500 unit.

Here you can see the internal modifications of the Clair Brothers 2600 and compared to the consumer 2600.

SAE & Hervic
In approximately in 1976, SAE manufactured a 150 watt receiver exclusively for Hervic Electronics "HR 150". Below is a scan of a two page hot sheet and review from High Fidelity Magazine. I have seen some documentation that maybe 250 watt version ("HR 250") was made too but I don't have any confirmation yet. There is also a possibility that this unit was originally ear marked as a SAE Mark V. Again, I don't have any confirmation.

Below is a picture of my Hervic 150 and an unusual find, a Hervic 150 with the Hervic logo replaced with the SAE logo. Also, the face plate is 17.5" wide versus the 18.0" width of the Hervic face plate. The how and why of the this configuration is yet to be determined.

SAE & Audiometrics
In approximately in late 80's/early 90's, SAE manufactured a 225 watt amplifier for Audiometrics in Santa Ana, California. Model "AM 441". There also an "AM 421" model but I do not have any specs on it. From the build style, I think this amp was manufactured around the time SAE was also manufacturing the "X" series. The case work is similar to the "X-1P" preamp power supply. This amp also is quite similar to the SAE A205 amp built under DAK ownership.

SAE & TiBi Electronics
This another unusual find, SAE manufactured a moving coil preamplifier. This was made for TiBi Electronics. The company was owned by a friend of Morris Kessler - Ted Bennet. I also believe Ted owned Audiometrics. If you look at the preamp below, you can see the silk screening style is very similar to the SAE RS-101 speaker switch.
 

SAE & EAS
This equalizer is something I just came across and was manufactured by Electronic Audio Systems, Inc. This company was owned by Ted Winchester who also was a partner in SAE. Ted developed the graphic equalizers and had a 15 year dual marketing agreement with Morris Kessler to sell the equalizers under his own company name as well as that of SAE. So this may be the case that EAS was the OEM to SAE as far as equalizers were concerned.