Marinair T.1448
€110 for both SOLD
1+1:1+1 ratio
10K:9.6K impedance
Lundahl LL1521D (alike to LL1540)
€55 for both
High impedance 1+1:2.28 ratio
OEP Z3003E
€12
10K:10K 1:1 ratio
http://www.oep.co.uk/page-content/datasheets/1500892798Z3003E%20issue%206.pdf
UTC O-6
€18
15k:95K 1:2.5 ratio
1+1:1+1 ratio
10K:9.6K impedance
Lundahl LL1521D (alike to LL1540)
€55 for both
High impedance 1+1:2.28 ratio
OEP Z3003E
€12
10K:10K 1:1 ratio
http://www.oep.co.uk/page-content/datasheets/1500892798Z3003E%20issue%206.pdf
UTC O-6
€18
15k:95K 1:2.5 ratio