OPA1678: DO we have a better low noise operational amplifiers to beat NJM2122?

Tool/software:

Hi, Team

In one of a audio speaker projects, we meet competitor NJM2122, customer prefer this device as it is a ultra low noise, 1.5nV/√Hz. 

we are trying to promote our hero product OPA1678, but customer feedback that OPA1678 noise performance is not good as NJM2122.

OPA1678 noise parameter: 4.5 nV/√Hz   

Do we have any other better choice? 

customer requirement about the audio low noise operational amplifiers: 

• Operating Voltage: ±5V power supply
• Low Noise Voltage :( 1.5nV/√Hz typ.@ f=1kHz )
• 2 channel

Thanks.

G.W