^ He's talking about Rockin Robin,over on Shepard. They put the retail price on all their stuff so to get a deal there you have to haggle a bit.But it can be done.
Nobody in town carries Techamps,but Rockin Robin does have Genz Benz.
Another decent place is Fuller's Vintage Guitar.They usually have a nice variety of Fenders,some cool Rickenbachers,a few Epiphone/Gibson products,and some old Kay uprights.Usually they have some nice acoustic bass guitars too.Not very high end in amplification tho.
There are three Guitar Centers in town,with the Westhimer store having the most bass equipment.The Westhimer store is right down the street from Evans Music City.I cant say what Evans has as I've not been there in ages.Also,if you go to the Westhiemer GC,go during school hours.It tends to be a zoo once school is out.
The guitar Center north store is across the freeway (45 north) from Texas Music Emporium.Can't say what they have,but if you are on the northside going to GC you might as well check it out.
Rich L is right about going to Austin and checking out Bass Emporium.Also check out Austin Bass Traders.
Big String - PM me if you need any help finding these places.Houston is a big mother but pretty easy to get around in with a little help.
L