A close examination of the AMS Neve specifications for the 1073SPX and the 1073LB reveal extremely similar electrical characteristics and performance (typically generated with an Audio Precision analyzer).
Normally I use my 1073SPX with the EQ bypassed when tracking. The EQ in/out button on the 1073SPX always makes a difference in the sound because the High Frequency control has no separate off position, it's IN the signal path if the EQ is engaged. This means the high frequencies are always slightly boosted or cut depending on where the High Frequency knob is resting (I tend to leave mine just slightly boosted because I like that sound best).
The 1073LB and 1073SPX sound very similar when the EQ is bypassed on the SPX version. All the other features on the SPX make up for the price difference. I appreciate all the integration on the SPX. I gotta have the output level indicator. The insert (switchable pre or post EQ) on the SPX is balanced-TRS, I use it all the time if I want to track with a compressor. The SPX has an amazing direct-box built right into it on the front panel. The two XLR inputs on the SPX are switch selectable.
AMS Neve did a good job on the 1073LB but you really give up a lot of useability to be in the 500 format and save a few dollars.
I've written extensively about the AMS Neve 1073 on High on Technology
http://www.highontechnology.tech/202...-ams.html#more
I've done extensive electronic comparisons between the AMS Neve and Warm Audio clones
http://www.highontechnology.tech/202...-audio-wa.html
and the most read review on High on Technology currently is the AMS Neve 1073SPX compared directly to the Behringer 1273 copy.
http://www.highontechnology.tech/202...d-to-neve.html
I'm an older person and have been following Mr. Neve since the early 1970's. His console creations inspired my interest and career in Professional Audio. Personally I think the only company that can be legitimately called Neve is the one known as AMS Neve today. They are the rightful owners of the legacy and have the employee background to prove it. The products they manufacture say Neve on them.
Mr Neve was a brilliant designer but a terrible business man and even worse manager (probably too much of a gentleman). In conversation with him at AES in 1991 he freely admitted it. Now that he has passed away RND is releasing newly designed products based on their somewhat recent association with Mr. Neve.
BTW I also love the sound produced by the current AMS Reverb which is a 500 size package.
I find it interesting that so many folks cling to the distortion characteristics of Neve products, Mr Neve detested distortion and worked hard to minimize it. Distortion on the current AMS Neve products is listed at .07% @ +20dBu, that is not much distortion and that is a super hot signal for most folks DAW interface line input.
I've known of Brent Averill for a long time, last time I saw him was at AES in 2013 in LA, he was chatting with Bruce Swedien who was signing copies of his new book. BAE makes nice sounding products.
The studio gadgets that actually say Neve on the front have the best resale value in the product sector. They also sound really good.
Good Music to You!