Swansea legend Alan Curtis said he was inspired by the club's New Stadium following his 10-minute substitute appearance in the 1-1 draw with Fulham.
"The stadium and view from the stand are fantastic, but you only realise how great when you are out on the pitch," Curtis told BBC Sport Wales.
"The Vetch was a daunting atmosphere, but this place is just something else."
The 51-year-old's testimonial marked the Swans' first game at the 20,000 seater new arena in Morfa.
Marc Goodfellow's strike four minutes from time cancelled out Steed Malbranque's goal to earn the League One side a draw with Premiership Fulham, managed by Swansea old boy Chris Coleman.
"It was a well-contested friendly and both sides got a good work out," said Curtis, who has been associated with the club for 34 years and will perform a hospitality role on match days at the new ground.
"I'm still calling this place the Vetch, old habits will die hard!
"But this atmosphere was created with just over 12,000 fans [limited for safety reasons], imagine how intimidating it will be with a sell-out 20,000.
"The pitch was a bit sticky, but it will be watered more in the season, meaning it will be more zippy and we can really get after teams."
Swansea manager Kenny Jackett said it was fitting that the landmark game was a testimonial for Curtis.
"He was a legend as a player and has gone on to do just about every job at this club with commitment and style," said Jackett.
"When I sent him on he said he wanted to go up front with Lee Trundle and that gave the crowd a chance to acknowledge him.
"I'm also a very proud man, to have been the first manager at this stadium."
Goal-scorer Goodfellow added: "It feels great to score Swansea's first goal at the ground.
"But it was Alan who deserved a great day, what he's achieved at this club has been legendary."