Definitely biwire, no questions about it. The King will sound much better when biwired, as will the VAC amps.
I reviewed the King as well as the VAC Phi 200 amps for Dagogo.com. I bought the King following the review, as it is such a fantastic ESL, and without exception ran it biwired. You would be losing a lot of the speaker's potential if you did not do so.
The other option is to secure a very good quality jumper cable as opposed to the supplied jumpers. This will likely improve the sound nicely but I cannot say whether it will be as good as biwiring.
Now, the speaker cabling itself used for biwiring is critical; if a poor caliber of wire is used the system sound will suffer, but if you use a fine quality sounding wire your system will shine.
I reviewed the King as well as the VAC Phi 200 amps for Dagogo.com. I bought the King following the review, as it is such a fantastic ESL, and without exception ran it biwired. You would be losing a lot of the speaker's potential if you did not do so.
The other option is to secure a very good quality jumper cable as opposed to the supplied jumpers. This will likely improve the sound nicely but I cannot say whether it will be as good as biwiring.
Now, the speaker cabling itself used for biwiring is critical; if a poor caliber of wire is used the system sound will suffer, but if you use a fine quality sounding wire your system will shine.