Table:
0
A
B
C
D
E
F
G
H
I
1
Headphone Model
Headphone Class
Sensitivity (dB)
Impedance (Ohms)
Driver-matched dB
Construction
Earpads
Termination
Succeeded by
2
SR40
Unknown
100
32
Unknown
Plastic
Foam
1/8" (3.5 mm) plug with 1/4" adaptor
iGrado
3
SR325
Prestige
98
32
0.05
Aluminum Alloy
Bowls
1/4" (6.5 mm) plug
SR325i
4
HP1000
Joseph Grado Signature
Unknown
40
Unknown
Aluminum Alloy
Flats
1/4" (6.5 mm) plug
No Successor
5
SR100
Prestige
Unknown
32
Unknown
Plastic
Flats
1/4" (6.5 mm) plug
SR125
6
SR200
Prestige
Unknown
32
Unknown
Plastic
Flats
1/4" (6.5 mm) plug
SR225
7
SR300
Prestige
Unknown
32
Unknown
Plastic
Flats
1/4" (6.5 mm) plug
SR325

Questions and formulas:
Question: What is the headphone model with a plastic construction and a prestige headphone class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:I1,(F1="plastic")*(B1="prestige")),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:I7,(F2:F7="plastic")*(B2:B7="prestige")),1))
Level: medium
Question: What earpads does the headphone with plastic contruction and was succeeded by igrado have?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:I1,(F1="plastic")*(I1="igrado")),7))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:I7,(F2:F7="plastic")*(I2:I7="igrado")),7))
Level: medium
Question: What are the earpads of the headphone with a plastic construction, an unknown sensitivity, and was succeeded by sr325?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:I1,(F1="plastic")*(C1="unknown")*(I1="sr325")),7))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:I7,(F2:F7="plastic")*(C2:C7="unknown")*(I2:I7="sr325")),7))
Level: medium
Question: What is the headphone model which was succeeded by sr325?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:I1,I1="sr325"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:I7,I2:I7="sr325"),1))
Level: medium